New research has uncovered a species of hook-toothed lizard that lived about 167 million years ago and has a confusing set of features seen in snakes and geckos—two very distant relatives. One of the ...

The newly described Mirasaura grauvogeli from the Middle Triassic had a striking feather-like crest, hinting that complex skin appendages arose far earlier than previously believed. Its bird-like ...

Electronic List in accession file. Folder List in accession file. For a description of the record series of which these materials form a part, refer to the "Forms part of" above. This accession ...