Around 230 million years ago, at least 19 alligator-size amphibians expired together on an ancient floodplain in what is now Wyoming.
The animals' fossilized remains, uncovered across four excavations between 2014 and 2019, have been relatively undisturbed since then and feature preserved delicate small bones and parts of the creatures' overall skeletal structure. The well-preserved findings could provide insight into how these Triassic amphibians lived and grew up, researchers reported in a new study published Wednesday (April 2) in the journal PLOS One.
