Frederik Spindler
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Artist’s impression of Lalieudorhynchus gandi and the aquatic temnospondyl tupilacosaurid (bottom left).
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Nationalgeographic.co.id—Paleontologists have identified a new genus and species of caseid synapsids that lived 264 million years ago. periode Permian. They analyzed a partial but well-preserved postcranial skeleton found in France.
The ancient animal belongs to the Caseidae, a group of primitive synapsids (mammal and its close relatives) that existed from the Carboniferous to the Permian. An ancient animal called Lalieudorhynchus gandi here, living in what is now France.
To be known, synapsida or theropsida is a group of animals that includes mammals and all their close relatives apart from other living amniotes.
Lalieudorhynchus gandi lived during the Guadalupian epoch of the Permian period, about 264 million years ago.
“Caseidae were one of the first large herbivorous amniotes to evolve on the supercontinent Pangea,” wrote Ralf Werneburg of the Museum of Natural History at Castle Bertholdsburg Schleusingen and colleagues in their paper. sci-news.
“These early synapsids are known from Pennsylvania in the United States, later in the Permian paleo-equatorial belt, from the United States to Siberia.”
While the first caseids were small to medium in size, later forms acquired very peculiar body shapes.
“With a large barrel-shaped trunk, a relatively small triangular skull with a large anatomy and leaf-like teeth, and large limbs ending with short fingers and powerful claws,” the researchers explain.
“Recently, many discoveries and re-descriptions allow for a better understanding of their paleobiodiversity and paleobiology, but their exact phylogenetic relationships remain under discussion.”
Partial skeleton Lalieudorhynchus gandi excavated in the La Lieude Formation, about 15 km south of Lodève in Occitanie, France.
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