Ctenochasma elegans, a pterosaur Posters archaeology and human origins

archaeology and human origins

Dickinsonia is sometimes put in the phylum Proarticulata

The class Malacostraca is divided in five superorders: Phylocarida

Ancient bison is the most commonly recovered herbivore from the La Brea tar pits

Ctenochasma elegans, a pterosaur Posters archaeology and human originsCtenochasma is distinguished mainly by its numerous (over 400 in adults) long, thin, curved and closely packed teeth, which lined its elongated and narrow snout. The teeth were so closely packed that they formed a comb, and in adults they projected outward away from the jaws, forming a basket; traditionally, these are thought to indicate a filter feeding lifestyle, straining water through the teeth in order to capture and eat small invertebrates, but