Tag Archives: reptile

New Armored Reptile Species Discovered from the Triassic Period in Brazil

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A newly discovered genus and species of pseudoarchosaur has been revealed from fossils found in southern Brazil.

Taingraqaskus Bellator. Image credit: Caio Fantini.

Taingraqaskus Bellator inhabited the area now known as Brazil during the Triassic period around 240 million years ago.

This ancient predator measured about 2.4 m (8 ft) in length and weighed approximately 60 kg.

The back of this species featured bony plates called osteoderms, a characteristic also seen in modern crocodilians.

Utilizing their long necks and agile movements, these predators quickly captured prey with swift, precise actions, employing their slender jaws filled with sharply curved teeth to secure their catch and prevent escape.

Dr. Rodrigo Temp Muller, a paleontologist at the Federal University of Santa Maria, stated, “This creature was an active predator, but despite its considerable size, it was not the largest hunter within its ecosystem, which included giants reaching up to 7 meters (23 feet) long.”

Taingraqaskus Bellator was part of the pseudostia — ancestors of modern crocodiles and alligators.

According to Dr. Temp-Müller, “Pseudostia were a diverse group capable of tackling tough prey, along with smaller hunters adept at catching swift animals.”

“It may resemble a dinosaur, yet Taingraqaskus Bellator does not belong to that classification.”

“One of the most evident distinctions from dinosaurs lies in its pelvic structure, where the hip and femoral joints exhibit significantly different characteristics.”

“The discovery of Taingraqaskus Bellator highlights the intricate ecosystem of the time, showcasing various pseudospecies with distinct sizes and hunting methods filling specific ecological roles.”

“This find uncovers crucial phases in life’s history that predate the arrival of dinosaurs.”

A partial skeleton of Taingraqaskus Bellator was located in Dona Francisca, southern Brazil, in May 2025, with its lower jaw, spinal column, and pelvic girdle preserved.

Although the limbs were not found, experts speculate that, like its relatives, it moved on all fours.

“The discovery of Taingraqaskus Bellator provides further evidence of an ancient link between Brazil and Africa during the Triassic period, a time when the continents were fused into the supercontinent Pangea,” said Dr. Temp Muller.

“Despite the variety of pseudonesters, some lineages are extremely rare in the fossil record, leading to a limited understanding of them.”

“The fossils underwent meticulous preparation in the lab, carefully removing surrounding rock.”

“Upon revealing the anatomical details, it became apparent that the specimen represented a previously unknown species, which was incredibly exciting for us.”

“We found a species closely related to a predator, Mandasucus Tanyauchen, discovered in Tanzania.”

“This link between South American and African fauna can be contextualized within Triassic paleogeography.”

“During this period, continents were still connected, allowing life to disperse freely across regions that are now separated by oceans.”

“Consequently, the Brazilian and African faunas share numerous commonalities, reflecting intertwined evolutionary and ecological narratives.”

Taingraqaskus Bellator would have thrived in the same environment where the first dinosaurs arose, in areas adjacent to vast arid deserts.

“Our findings indicate that southern Brazil’s reptiles had already developed diverse communities adapted to various survival strategies.”

“Moreover, this discovery unveils that such diversity is not an isolated phenomenon.”

This research is detailed in the following article: paper published in Journal of Systematic Paleontology.

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Rodrigo Temp Muller and others. Osteology, taxonomy, and phylogenetic relationships of a new pseudoarchosaur from the Middle Triassic of southern Brazil. Journal of Systematic Paleontology, published online on November 12, 2025. doi: 10.1080/14772019.2025.2573750

Source: www.sci.news

Fossil Trucks Discovered in Australia Extend Reptile Origins by 35 Million Years

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Paleontologists have uncovered fossilized tracks of reptile-like creatures from the early Carboniferous Tonan period, approximately 355 million years ago, within the snow plain formation in Victoria, Australia. This discovery indicates that such animals originated from Gondwana, where Australia was centrally located.

Artist’s impression of early reptile track makers from 355 million years ago. Image credit: Martin Ambrozik.

Tetrapods evolved from a group of fish that transitioned from aquatic to terrestrial life around 390 million years ago during the Devonian period.

These ancestral beings are the forebears of all modern vertebrates inhabiting land, including amphibians and various mammals, reptiles, and birds.

The oldest known amniotic fossils previously discovered date back to the late Carboniferous period, roughly 320 million years ago.

The findings from this 355 million-year-old snow plains slab, found by two amateur paleontologists, reveal that reptiles were already present 35 million years earlier than previously thought, at the dawn of the Carboniferous.

“Upon recognizing this, I understood that we had the oldest evidence globally of animals akin to reptiles, pushing back the evolutionary record by at least 35 million years beyond prior findings in the Northern Hemisphere,” stated Professor John Long from Flinders University.

“The fossilized tracks uncovered in the Mansfield region of northern Victoria, Australia, were created by creatures resembling small, agile, Goanna-like animals.”

A slab containing 355 million-year-old tracks from Australia’s Snowy Plains formation. Image credit: Long et al., doi: 10.1038/s41586-025-08884-5.

“When I initially encountered this specimen, I was astounded. Just seconds later, I noticed that the nail impressions were remarkably preserved,” said Dr. Grzegorz Niedwiedzki, a researcher at Uppsala University.

“Nails are characteristic of all early amniotic species but are absent in other quadruped lineages,” added Per Erik Ahlberg, a professor at Uppsala University.

“The combination of nail marks and foot shapes suggests that the track maker was a primitive reptile.”

According to the research team, this discovery profoundly impacts the understanding of early tetrapod evolution.

Although all stem tetrapods and stem amniotes must have emerged during the Devonian period, evidence suggests that tetrapod evolution progressed significantly faster than previously believed, with far fewer Devonian tetrapods than assumed.

https://www.youtube.com/watch?v=jj7bttru0l8

“Skeletons can reveal much about an animal’s capabilities, but trackways capture behavior and illustrate how the animal functioned,” explained Dr. Alice Clement from Flinders University.

“This new fossilized trackway we examined dates from the early Carboniferous, making accurate age identification crucial. We achieved this by comparing the various fish fauna in these rocks to similar morphotypes found in well-dated sedimentary layers from across the globe, providing a timeline constraint of approximately 10 million years.”

“This finding redefines a segment of evolutionary history,” remarked Dr. Gillian Garvey from La Trobe University.

“Much has occurred in Australia and Gondwana, indicating that the narrative is still unfolding.”

The findings are detailed in a paper published in the journal Nature.

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Ja Long et al. Early amniote tracks revise the timeline of tetrapod evolution. Nature published online on May 14th, 2025. doi:10.1038/s41586-025-08884-5

Source: www.sci.news

Ancient Reptile Footprints Challenge Theories on Land Animal Evolution Timing

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Researchers in Australia have discovered the oldest known fossil footprint of reptile-like animals, dating back roughly 350 million years ago.

This discovery implies that the first animals began emerging from the oceans around 400 million years ago and adapted to terrestrial life much quicker than previously thought.

Stuart Smida, a paleontologist from California State University, remarked, “I believed the transition from fins to limbs took more time.”

Before this, the oldest known reptile footprints were found in Canada and dated to 318 million years ago.

The ancient footprints were uncovered in sandstone slabs near Melbourne, revealing reptile-like feet with elongated toes and claws.

Scientists estimate that the creature was about 2.5 feet long (80 cm) and might resemble a modern monitor lizard. These findings were published on Wednesday in the journal Nature.

Co-authors and paleontologists, including Arlberg from Uppsala University in Sweden, indicated that the evidence showcases the identification of nails surrounding the footprint.

“It’s a walking animal,” he stated.

Located near Melbourne, Australia, sandstone slabs reveal fossil footprints of reptile-like creatures that roamed approximately 350 million years ago. The footprint is highlighted in yellow (front paw) and blue (back paw), indicating the movement of three similar animals, according to the researchers.
Grzegorz Niedzwiedzki / Prof. Per Per Erik Ahlberg via AP

Only animals that evolved to live entirely on land developed the claws seen in these fossils. Earlier vertebrates, such as fish and amphibians, did not have hard claws and depended on aquatic environments for laying eggs.

In contrast, branches of the evolutionary tree leading to modern reptiles, birds, and mammals, known as amniotes, developed feet equipped with claws suited for traversing dry ground.

Smida commented, “This is the earliest evidence we’ve encountered of animals with claws.”

During the time these ancient reptiles existed, the environment was warm and humid, with expansive forests beginning to take shape. Australia was then part of the supercontinent Gondwana.

The fossil footprints tell a story of a day in the life, Ahlberg explained. A reptile fled across the ground before light rain; some rain droplets lightly obscured the tracks. Subsequently, two more reptiles dashed in opposing directions before the ground hardened and became covered with sediment.

Co-author John Long, a paleontologist at Flinders University in Australia, stated:

Source: www.nbcnews.com

Newly discovered marine reptile species from the Triassic period.

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Paleontologists have described a new species of pachypleurosaur that lived during the mid-Triassic period in southwestern China.

holotype of Dianmeisaurus mutaensis From the Guanling Formation, China: (A) Skeleton seen from the back. (B) Equivalent to (A). Scale bar – 1 cm. Image credit: Hu others., doi: 10.1186/s13358-023-00292-4.

Dianmeisaurus mutaensis They lived in what is now China during the Anisian period of the mid-Triassic period, about 245 million years ago.

What is an ancient species? Pachyprourosaurus a group of primitive sauropterygian reptiles of the Triassic period.

These animals resembled aquatic lizards and had small heads, long necks, paddle-like limbs, and long, deep tails.

“Sauropterygia was the most flourishing clade of Mesozoic marine reptiles in terms of species diversity, with the iconic plesiosaurs of the Jurassic and Cretaceous, and the stem-group placodonts and eophytes of the Triassic. sauropterygia,” said Dr. Jun Liu and colleagues at the institute. Hefei University of Technology.

“Eosauropteri were traditionally divided into three groups: pachyprourosaurids, nososaurids, and pistosaurids.”

“In this traditional view, the monophyletic Pachypleurosauria is thought to constitute a sister group to the clade Eusauropterygia, which consists of Nososaurinae and Pistosaurinae.”

complete and articulated skeleton of an immature animal Dianmeisaurus mutaensis It was discovered in an abandoned quarry about 1 km northwest of Muta Village, Luxi County, Yunnan Province, China.

The skeleton was divided into two parts during collection and prepared using pneumatic tools and needles in the paleontology laboratory.

“The skeleton is embedded in dark gray micritic limestone and consists of one segment and its counterpart,” the paleontologists said.

“The specimen is well preserved and has a total length of 99.2 mm (4 inches).”

“Adjacent to the specimen are scattered limb and rib bones from other individuals, but the limited information available makes further identification difficult.”

Artist's impression of Pachypleurosaurus Umengosaurus. Image credit: Nobu Tamura / CC BY-SA 4.0.

The research team's analysis identified this new species as a sister group. Dianmeisaurus gracilis a small pachypleurosaur from the Luoping biota of the Middle Triassic.

“Dianmeisaurus mutaensis Displays several eutoroid features, including a postfrontal region that extends posteriorly to the middle of the parietal table and is excluded from the upper temporal fenestra, a stout last dorsal rib that is shorter than the first sacral rib, and two sacral vertebrae. “There is,” the researchers said.

“Additionally, a new data matrix has been compiled to reassess the interrelationships of neosauropterygians.”

“Phylogenetic analysis indicates monophyletic collapse of Eusauropterygia,” they added.

“Pistosaurinae, Magiasinosaurus and Hanosaurus These constitute a continuous sister group to the monophyletic clade that includes Pachyprosaurinae and Nososaurinae.”

“Furthermore, the monophyly of Pachyprourosauria is supported by six synapomorphies.”

“Our phylogenetic results provide further evidence for the East Tethys origin of pachypleurosaurs,” the researchers said.

“However, to test the biogeographical hypothesis, we need early Anisian pachypleurosaurs from the eastern region of Tethys.”

of findings Published in Swiss Journal of Paleontology.

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YW Hu others. 2024. A new species of Pachypleurosaurid (Reptilia: Sauropterygia) that lived in the Middle Triassic of southwestern China and its phylogenetic and biogeographical significance. Switzerland J Palaeontre 143, 1; doi: 10.1186/s13358-023-00292-4

Source: www.sci.news

Prehistoric crocodile-like reptile unearthed in Brazil’s Triassic era

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A new genus and species of Triassic gracillid reptile has been identified from fossils discovered in the Santa Maria Formation of Brazil.

Artistic representations of the Middle to Late Triassic landscape of southern Brazil: (a) large Prestosuchus chinensis It feeds on the carcasses of dicynodonts, Parvosuchus aurelioi Compete for scrap metal. (b) and (c) Parvosuchus aurelioiImage courtesy of Matheus Fernandes.

Named Parvosuchus aurelioiThe new species roamed the Earth about 237 million years ago (during the Triassic Period).

The ancient reptiles Gracilidae (Gassiliscidae), an extinct family of pseudo-nudibranchs that lived in China, Argentina, and Brazil.

“Pseudobranchs were a common group of ancient tetrapod reptiles during the Triassic, before the dominance of dinosaurs, and some of their species were among the largest carnivores of their time,” says paleontologist Rodrigo Muller of the Federal University of Santa Maria.

“Smaller pseudosuchians, known as gracilischiidae, live alongside these apex predators and have been found in areas such as China and Argentina.”

“These creatures were characterized by relatively large heads with wide mouth openings, carnivore-like teeth, slender limbs, and a quadrupedal posture.”

Partial skeleton of Parvosuchus aurelioi Found in Santa Maria Formation Paraiso do Sul, Rio Grande do Sul, Brazil.

It consists of a complete skull including the lower jaw, 11 dorsal vertebrae, a pelvis, and partially preserved limbs.

“The reptile’s skull is 14.4 centimetres long and features elongated jaws with pointed, backward-curving teeth and several skull openings,” Dr Muller said.

“The skeleton is lightweight and estimated to be less than one metre long.”

“These characteristics are Parvosuchus aurelioi This is the first time that a species of this group has been identified in Brazil.”

“This discovery highlights the diversity of Triassic pseudo-pinnids.”

Discovery Parvosuchus aurelioi It has been reported paper Published in the journal today Scientific Reports.

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R.T. Müller. 2024. A new small, predatory pseudobranchial sauropod from the Middle to Late Triassic of southern Brazil. Scientific Reports 14, 12706; doi: 10.1038/s41598-024-63313-3

Source: www.sci.news

Australia Unearths New Flying Reptile Fossil

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Australian paleontologists have discovered the fossilized skeleton of a previously unknown Anhangeria pterosaur, dating back 100 million years.

Reconstructing your life Haliskia petersenii Image courtesy of Gabriel N. Ugueto.

The newly identified pterosaur species lived in what is now northeastern Australia's state of Queensland during the Early Cretaceous period, about 100 million years ago.

Scientific Name Haliskia petersenii This flying reptile had a premaxillary crown and curved teeth.

It also had a long wingspan of about 4.6 metres (15.1 feet).

“Haliskia petersenii “About 100 million years ago, when much of central-west Queensland was underwater and covered by a vast inland sea, and on Earth where the southern Victoria coastline is now, it would have been a fearsome predator,” said Adele Pentland, a PhD student at Curtin University.

Fossilized remains Haliskia petersenii Kevin Petersen, curator of the Kronosaurus Corner Museum, in November 2021 Toule back formation Of the Eromanga Basin.

“Haliskia petersenii “The fossil is 22 per cent complete, more than twice as complete as the only other partial pterosaur skeleton found in Australia,” Mr Pentland said.

“The specimen includes a complete lower jaw, the tip of the upper jaw, 43 teeth, vertebrae, ribs, both wing bones and part of a leg.”

“There are also very thin and delicate throat bones present, indicating the presence of a muscular tongue, which would have been useful when eating fish and cephalopods.”

Pentland and colleagues Anhangeria is a group of pterosaurs known to have lived all over the world, including in what is now Brazil, Britain, Morocco, China, Spain, and the United States.

“The global nature of the Anhang-area pterosaurs, and in particular their success across Gondwana (e.g. in the Eromanga and Araripe basins), may have been made possible by niche partitioning within this clade,” the paleontologists said.

“However, rigorous testing of this hypothesis will require multiple locations and better time constraints.”

“Additional data on this clade are available Haliskia petersenii ” sheds light on the palaeoecology of Anhangeria pterosaurs and highlights the taxonomic diversity of these flying reptiles from the Cretaceous of Australia.”

Team paper Published in the journal Scientific Reports.

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A.H. Pentland others. 2024. Haliskia petersenii A new Anhangelian pterosaur that lived in the early Late Cretaceous of Australia. Scientific Reports 14, 11789; doi: 10.1038/s41598-024-60889-8

Source: www.sci.news

Gigantic ancient ichthyosaur discovered on UK coast may be the biggest marine reptile in history

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Illustration of a carcass of Ichthyotitan severnensis washed up on the beach

Sergey Krasovsky

The fossilized remains of an ancient 200 million-year-old ichthyosaur unearthed on the coast of southwest England may be some of the largest marine reptiles ever discovered.

In 2020, amateur fossil hunters stumbled upon a huge chunk of bone at Blue Anchor Beach in Somerset. Upon further inspection, dean lomax He and his colleagues at the University of Manchester in England quickly realized that it was a fragment of the jawbone of a giant ichthyosaur, a type of reptile that roamed the oceans between 250 million and 90 million years ago. Noticed.

Subsequent excavations on the beach uncovered 11 more fragments, and the team was able to partially piece together the bone at the back of the jaw, called the mandible.

This latest discovery is A 2018 report describing a similar ichthyosaur jawbone Found on another Somerset beach. At the time, the research team did not have enough evidence to identify the species.

“It was clear that this was another giant jawbone,” Lomax said. “So I was very, very excited.”

After comparing the partial exohorn bone with the complete exoskeleton of other ichthyosaurs, the researchers estimated that the entire bone was at least 2 meters long, meaning the animal was about 20 to 25 meters long.

“We're working on something really huge,” Lomax says. “It would definitely be the largest officially described marine reptile.”

The properties of the exoceratops, which match those reported in 2018, mean both fossils must belong to previously undescribed ichthyosaur species, Lomax said.named by the team Ichthyotitan severnensismeaning giant fish lizard of the River Severn.

The site is about 202 million years old, just before the great global extinction event that wiped out many species, including many giant ichthyosaurs.

“They are quite literally the last giants,” Lomax says. “No ichthyosaur will ever come close to this size again.”

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Source: www.newscientist.com

Could the massive fish lizard be the largest marine reptile ever found, surpassing the megalodon in size?

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Forget about megalodons being scary, there’s a new prehistoric creature in town with jaws that may rival Meg’s in power, making it the largest marine reptile ever identified on Earth.

The giant jawbone of this beast measures over 2 meters (6.6 feet), allowing for a bite force strong enough to crush bones. In comparison, the jawbone of a megalodon, which was about the same size, measured only 0.5 meters (1.6 feet).

Experts believe that this massive new ichthyosaur species was a staggering 25 meters (82 feet) long, similar in size to a modern blue whale. (Megalodon was about 15-20 meters, or 65 feet in length).

The fossilized remains of this creature were found on the Somerset coast.

The research team named this new species Ichthyotitan severnensis, meaning “Giant Fish Lizard of the Severn.” These bones date back to around 202 million years ago, towards the end of the Triassic period, just before the dinosaur extinction event.

The first jawbone of this mysterious species was discovered in 2016, with this recent find confirming its existence.

Dr. Dean Lomax, a paleontologist at the University of Manchester, expressed excitement about the discovery, hoping that more complete specimens may be found in the future.

Lomax and his team compared the two jawbones and found shared unique features, indicating they were from the same geological period.

Ruby Reynolds, an 11-year-old girl, discovered a new salangular on the beach in 2020, leading to further discoveries by her and her team, including the final piece of the jawbone in 2022.

Now 15, Ruby Reynolds has contributed to naming the new species and is already a published scientist, listed as a contributor to research in the journal PLoS ONE.

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Source: www.sciencefocus.com

Paleontologists claim Dinocephalosaurus was a fully aquatic reptile that delivered offspring in the ocean

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Detailed explanations are provided by paleontologists from Germany, China, the United Kingdom, and the United States. Dinocephalosaurus orientalis a remarkable marine reptile from the Middle Triassic of China, based on seven beautifully preserved specimens.

repair of Dinocephalosaurus orientalis It is depicted in a school of large predatory actinopterygian fishes. Saurictis. Image credit: Marlene Donnelly.

Dinocephalosaurus orientalis They lived in what is now China during the Triassic period about 240 million years ago.

This aquatic reptile could reach up to 6 m (20 ft) in length and had an extremely long neck with 32 separate vertebrae.

the animal looked very similar Tanystropheus hydrides another strange marine reptile that lived during the Middle Triassic period of both Europe and China.

“Both reptiles were similar in size and had some common skull features, including a fish-catching type of dentition,” said Dr Nick Fraser, head of natural sciences at the National Museum of Scotland, and colleagues. Stated.

“but, Dinocephalosaurus orientalis It is unique in having more vertebrae in both its neck and torso, giving it a more snake-like appearance. ”

Dinocephalosaurus orientalis. Image credit: National Museums of Scotland.

Dinocephalosaurus orientalis They are strictly marine reptiles and almost certainly gave birth at sea.

The exact function of its extraordinarily long neck is unknown, but it almost certainly helped catch fish, and in one specimen it is preserved in the stomach contents.

Despite superficial similarities, this reptile was not closely related to the famous long-necked plesiosaur, which evolved only about 40 million years later and inspired the Loch Ness Monster myth.

“This discovery allows us, for the first time, to see the entire body of this amazing long-necked animal,” Dr Fraser said.

“This is another example of the weird and wonderful world of the Triassic that continues to baffle paleontologists.”

“With its striking appearance reminiscent of the long, serpentine dragon of Chinese mythology, we are confident it will capture imaginations around the world.”

Dinocephalosaurus orientalis First described in 2003, the discovery of additional, more complete specimens has allowed the authors to fully describe this strange long-necked creature for the first time.

“Among the amazing discoveries we made in the Triassic of Guizhou, Dinocephalosaurus orientalis It probably stands out as the most remarkable,” said Professor Li Chun, a paleontologist at the Institute of Vertebrate Paleontology and Paleoanthropology.

of findings Published in today's magazine Earth and Environmental Sciences: Papers of the Royal Society of Edinburgh.

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Stephen NF Speakman other. Dinocephalosaurus orientalis Li, 2003: A remarkable marine archosaur from the Middle Triassic of southwestern China. Earth and Environmental Sciences: Papers of the Royal Society of Edinburgh, published online on February 23, 2024. doi: 10.1017/S175569102400001X

Source: www.sci.news

The prehistoric gliding reptile of Britain.

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The gliding-winged reptile called Queneosaurus lived in what is now the Mendip Hills in Somerset, England, during the Triassic period, about 210 million years ago.

Queneosaurus latus (right) and Queneosuchus latissimus (left). Image credit: Nobu Tamura http://spinops.blogspot.com.

Queneosaurus Although they resembled lizards, they were more closely related to crocodiles and dinosaur ancestors.

It was a small animal that could fit in the palm of your hand.

There were two species: Queneosaurus latus and Queneosuchus latissimus.

One had broad wings, the other short wings, made of a layer of skin stretched over elongated transverse ribs, which allowed it to swoop from tree to tree.

Like a modern flying lizard draco Hailing from Southeast Asia, they are likely to roam the ground or climb trees in search of insect prey.

When startled or when they saw a tasty insect flying by, they could fly into the air and land safely 10 meters away.

The discovery was made by Mike Cawthorn, a student at the University of Bristol, and his colleagues.

The authors examined a large number of reptile fossils taken from three limestone quarries: Enborough, Butscombe and Highcroft. These quarries were located on the largest subtropical island at the time, Mendip Paleo Island.

In addition to Queneosaurus latus and Queneosuchus latissimusthey recorded the existence of Trilophosaurus, a reptile with complex teeth. Variodence and aquatic life Pachystropheus It probably lived a bit like modern otters, eating shrimp and small fish.

These creatures fell or their bones were washed away into caves and limestone cracks.

“The beasts were all small. We were hoping to find dinosaur bones or even isolated teeth, but in fact we found everything but dinosaurs,” Cawthorn said.

“The collections I studied were created in the 1940s and 1950s, when the quarries were still active, and paleontologists could visit to see fresh rock surfaces and talk to the quarrymen. is completed.”

Professor Mike Benton, from the University of Bristol, said: “It took a huge amount of effort to identify the fossil bones, most of which were separate and not part of the skeleton.”

“But we have a lot of comparative material and Mike Cawthorn was able to compare the isolated jaw and other bones with more complete specimens from other sites around Bristol.”

“He showed that the ancient Mendip islands, some 30km long, stretching from Frome in the east to Weston-super-Mare in the west, were home to a wide variety of small reptiles that fed on plants and insects.”

“He didn’t find any dinosaur bones, but dinosaur bones have been found elsewhere in the same geological period around Bristol, so dinosaur bones may have been there.”

During the Late Triassic period, 200 million years ago, the area around Bristol was an archipelago of small islands in a warm subtropical sea.

“These bones were collected in the 1940s and 1950s by some of the great fossil finders, including Tom Fry, an amateur collector at the University of Bristol, who often cycled to the quarry and picked up heavy stones. “They came home with bags of stuff,” said Dr David from the University of Bristol. white side.

“Other collectors were Walter Kuehne, a talented German researcher who was imprisoned in Britain during World War II, and Pamela L. Robinson of University College London.”

“They donated the specimens to the Natural History Museum in London and the Geology Collection at the University of Bristol.”

team's paper Published in Proceedings of the Association of Geologists.

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Michael Cawthorn other. A modern Triassic terrestrial microvertebrate assemblage from caves at Emborough Quarry, Batscombe Quarry and Hycroft Quarry on the Old Islands of Mendip, south-west England. Proceedings of the Association of Geologists, published online on January 20, 2024. doi: 10.1016/j.pgeola.2023.12.003

Source: www.sci.news

Skin Fossil from 300-Million-Year-Old Reptile is the Oldest Known

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Captorhinus aguti, an ancient reptile that may be the source of the oldest skin fossils

michael debraga

The collection of fossilized skin fragments is the oldest ever discovered. This 300 million-year-old fossil belongs to a crocodile-like reptile and could help us understand how skin evolved.

After an animal dies, the skin decomposes quickly, so fossilization is rare. But this early Paleozoic reptile eventually ended up in a suitable place to preserve its skin. It was buried in oily clay deposits in an ancient limestone cave in what is now Oklahoma. There was little oxygen in the cave sediments, which slowed the decomposition process long enough for the tissue to fossilize, trapping the mummified skin mold.

The discovery was a surprise to researchers who had been examining the tiny black fossil fragments using microscopic 3D scans. “They were so small and skinny that we had to be very gentle with them,” he says. tea maho At the University of Toronto, Canada. Their scans revealed a pebble-like scale texture similar to crocodile skin, especially the flatter, smaller scales on the crocodile's flanks.

Researchers concluded that the skin belonged to a Paleozoic reptile, but it is unclear which species. Based on nearby fossils, they suspect the skin belongs to an extinct lizard-like species. Captorinus aguti. It's not clear how the reptile reached its final resting place. Perhaps it fell into the cave from a vertical shaft or was swept into the cave by a heavy rainstorm.

The fossilized skin fragments are about 21 million years older than any previously discovered, showing how and when vertebrates developed skin after they transitioned from living in the sea to living on land. It reveals new clues about how it evolved. “This is a unique opportunity to examine the first chapter in the evolution of higher vertebrates,” he says. ethan mooney at the University of Toronto. Skin helped aquatic animals make the leap to life on land by providing a watertight barrier between sensitive organs and the outside world.

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Source: www.newscientist.com