Ctenochasma elegans, a pterosaur Posters The slates and shale of

The slates and shale of southern France

Dickinsonia is sometimes put in the phylum Proarticulata

The remains of 10 individuals were excavated from Skhul cave in 1932 and are widely considered to be the earliest examples of H

4 m (man-sized)

Ctenochasma elegans, a pterosaur Posters The slates and shale ofCtenochasma 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