Fossil from Ichnology of New England. Artwork by Will Sillin. Image courtesy of Beneski Museum of Natural History at Amherst College.
Otozoum footprints are distinct from other tracks found in the Connecticut River Valley in that the hind foot has 4 toes. They are associated with a two legged, plant eating prosauropod dinosaur, similar to Anchisaurus. Edward Hitchcock envisioned the track maker as looking like a giant frog or salamander nearly the size of an elephant.