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I was looking at Triassic animals and the strange longisquama. I have only seen one image of a fossilized specimen, is there only one found? The things on its back I've also seen pits pictured two ways, either wings or coming out of its back straight up. Do we know enough so both are technically valid? Most interpretations I've seen have seven of the spikes but I counted eight. How many are there? Attached are pictures of the only specimen that came up, what I believe is the only bones found and two ways it has been made to look. This image says the display kind of like dimetrodon is the most likely one.
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New specimen of Triassurus and the early evolution of salamanders
DD1991 posted a topic in Fossil News
A new exciting paper regarding early lissamphibian evolution is available online: Rainer R. Schoch; Ralf Werneburg; Sebastian Voigt (2020). A Triassic stem-salamander from Kyrgyzstan and the origin of salamanders. Proceedings of the National Academy of Sciences of the United States of America 117. doi:10.1073/pnas.2001424117. https://www.pnas.org/content/early/2020/05/05/2001424117 For a long time, a bonafide salamander from the Triassic remained elusive in the fossil record, although the recent description of Chinlestegophis has helped shed light on early caecilian evolution. Triassurus had been assigned to Caudata by Ivakhnenko (1978), but Estes (1981) questioned this placement and viewed it as a larval temnospondyl, while Milner (1994, 2000) noted that Triassurus has a suite of traits that distinguish it from Jurassic salamanders. Now, however, the paper by Schoch et al. confirms the initial placement of Triassurus as a member of Caudata, effectively making that genus the earliest bonafide salamander and filling another gap in the fossil record of early lissamphibians. Additionally, the new specimen of Triassurus happens to further confirm the temnospondyl origin of lissamphibians by sharing physical features with branchiosaurids and amphibamiforms.-
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Vertebrate Paleontology of Kyrgyzstan (Royal Tyrrell Museum Talk)
Oxytropidoceras posted a topic in Fossil News
Great talk about the vertebrate paleontology of Kyrgyzstan. Changing Landscapes in the Tien Shan Mountains of Kyrgyzstan Royal Tyrrell Museum of Palaeontology Dr. Win McLaughlin (Oberlin College) Published on Mar 11, 2019 https://www.youtube.com/watch?v=IuoJi8rpPxA Yours, Paul H.- 1 reply
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