Plagiosaurus

{{Short description|Extinct genus of amphibians}}

{{Automatic taxobox

|fossil_range = Triassic

|image = Plagiosaurus DB.jpg

| taxon = Plagiosaurus

| authority = Jaekel, 1914

| type_species = {{extinct}}Plagiosaurus depressus

| type_species_authority = Jaekel, 1914

}}

Plagiosaurus is an extinct genus of temnospondyl amphibian. The type and only species is P. depressus, first described by Otto Jaekel in 1914.{{Cite journal|last1=Witzmann |first1=F. |last2=Schoch |first2=R. R. |title=Osteology and phylogenetic position of Plagiosaurus depressus (Temnospondyli: Plagiosauridae) from the Late Triassic of Germany and the repeated loss of dermal bones in plagiosaurids |year=2024 |journal=Zoological Journal of the Linnean Society |doi=10.1093/zoolinnean/zlae014 |url=https://academic.oup.com/zoolinnean/advance-article-abstract/doi/10.1093/zoolinnean/zlae014/7615792 |url-access=subscription }} Arthur Smith Woodward regarded the genus as a synonym of Plagiosternum, but most researchers consider it to be valid.{{Cite book |url=https://books.google.com/books?id=vFwLAAAAIAAJ |title=Transactions of the American Philosophical Society |publisher=American Philosophical Society |year=1946 |isbn=978-1-4223-7723-9 |volume=35 |pages=395 |language=en}} It was paedomorphic, retaining the larval gills in adulthood. Like many stereospondyls, it had weak simplified vertebrae, consisting of large intercentra and neural arches, which is known as the stereospondylous condition.

{{portal|Paleontology}}