FOSSILS SPECIMEN: HEMICHORDATA
Fossils are defined as any evidenceĀ 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

Graptolites in Shale Matrix
Paleozoic
North America

Graptolites in Shale Matrix
Paleozoic
North America

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

Mazoglossus ramsdelli (Acorn Worm)
Pennsylvanian
(Upper Carboniferous)
Carbondale Formation Mazon Creek Will County Illinois