Fossil Tridentipes

Hitchcock originally thought this trackmaker had three toes, so gave the name Tridentipes (tri, three, pes, toe), but later, by prying the layers of a specimen apart, as he did when he made "track books," he discovered the impression of a fourth toe in underlying layers. 

Date:

Accession #:

52/10

Courtesy of:

Beneski Museum of Natural History at Amherst College, photograph by Penny Leveritt