The excavation scientists have discovered and described a new jaw from the cortical pies of Ctenochasmatid from the formation of the Jurassic Limestone Portland in southern England.
Rebuilding life from ctenochasmatid pterosaur Gladocephaloideus Jingangshanensis. Credit image: Zhao Chuang.
“The remnants of the wedding are still rare in the upper Jurassic layers in the United Kingdom, which are mostly consisting of bones or fragments of bones,” said Roy Smith and David Martel of the University of Portsmouth.
“Many records of the late Jorani exaggeration in the United Kingdom are more than just a historical interest, and include the types named that are now considered to be Doubt names“
“However, some materials are diagnostic, and many species have stopped testing time.”
“To a large extent, the majority of the UK’s upper wedding wedding came from the formation of the Cimmeraridge clay in southern England, with a few events from the Oxford part of the formation of Clay Oxford in southern and eastern England, and one of the formation of Clay Kimmeride from Scotland.”
“Despite the scarcity of these materials, there were some incidents of associated materials and the full skull near CusPicephalus Scarfi In the type of Kemeridigian stage. “
The new zubeh sample is the lower jaw with at least two, and perhaps three teeth.
Al -Ahfoura’s history dates back to the late Jurassic era, about 147 million years ago.
It is the smallest geological stadium of the United Kingdom.
The excavation scientists said: “The sample is the isolated lower jaw that lacks most of the deliberate parts of Rami.”
“It was identified as a thorny boat because of the very thin Komacta and its ground shape from the lower jaw.”
The new sample was found in The formation of limestone Portland From Dorst, the Southern UK.
It is the first fungus of the creeping creeping skull that is documented, described and visualized by this composition.
The researchers said: “The sample is likely to be found for the first time when the quarry divided the stone using the” standard “feathers and” standard “procedures,” the researchers said.
“This has damaged the middle part of the sample, while dividing the jaw in its length has also damaged the sample. It seems that the counterpart has not been recovered.”
The lack of diagnostic features prevents the referral of fossils to the known or new species, but can be assigned confidently to the wedding ctenochasmatoid.
The scientists said: “Ctenochasmatoids is a variety of crawling crawls that contain most of the noticeable races of slim teeth that are closely diverged in the curved jaws at times,” said scientists.
In fact, one form, South America PterodaustroHe has one of the longest teeth in terms of the percentage of the length of the length of any tetrapod. “
Eucenochasmatian The old creeping And ctenochasmatoid ARDEAADACTYLUS LONGICOLLMBoth of them from the tripartite era, they have short -speaking teeth with the wider Senkhiya spacing than those in their allies Ctenochasmatid. “
“The slim jaw and many crushing vesicles are closely spaced indicating that it is a member of the ctenochasmatidae.”
“The low intermediary hills on the surface of the plate between two Akhdin, converge with the medium average groove, and the lack of premaxilla is distinctive indicates that the sample is part of the Symphysis of the lower jaw.”
“This is the first documented record for Pterodactyloid from Portland Group in England.”
the Results This month was published in The facts of the Geology Association.
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Roy Smith and David M. Martel. Knochsmatide Petrosor of the formation of limestone Portland (late Jurassic, Titon) from southern England. The facts of the Geology AssociationIt was published on the Internet on March 11, 2025l DOI: 10.1016/J.PGEOLA.2025.101100