FOSSILS SPECIMEN: HEMICHORDATA

Fossils are defined as any evidence of prehistoric life. There are two types of fossils: Body Fossils include remains of skeletal bones, shell, carapace, test and teeth. Trace Fossils are clues the organism existed such as foot prints, tracks, burrows and coprolites (fossil dung).

Domain: Eukaryota – Kingdom: Animalia – Phylum: Hemichordata – Class: Pterobranchia – Subclass: Graptolithina

(graptolites)

Cambrian to Carboniferous

Graptolites in Shale Matrix

Paleozoic

North America

Graptolites in Shale Matrix

Paleozoic

North America

Phylum: Hemichordata – Class: Enteropneusta – Order: Enteropneusta

(acorn worm)

Precambrian to Holocene