Biology:Tetragraptus

Short description: Genus of marine worm-like animals

Tetragraptus Temporal range: Ordovician ~478–455 Ma PreЄ Є O S D C P T J K Pg N
Tetragraptus fruticosus
Tetragraptus approximatus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Hemichordata
Class:	Pterobranchia
Order:	†Graptoloidea
Family:	†Dichograptidae
Genus:	†Tetragraptus Salter, 1863
Species
T. akzharensis T. approximatus T. fruticosus T. insuetus

Tetragraptus is an extinct genus of graptolites from the Ordovician period.

Species

• T. akzharensis
• T. approximatus
• T. fruticosus
• T. insuetus

Distribution

Fossils of Tetragraptus have been found in Argentina, Australia, Bolivia, Canada (Quebec, Yukon, Newfoundland and Labrador and Northwest Territories), Chile, China, Colombia (near Caño Cristales, Meta), the Czech Republic, France, Morocco, New Zealand, Norway, the Russian Federation, Spain, Sweden, the United Kingdom, and the United States (Alaska, Idaho, Nevada, Utah).

Further reading

• Don Lessem & Jan Sovak (1999). Dinosaurs to Dodos: An Encyclopedia of Extinct Animals. Scholastic. ISBN 978-0-590-31684-2. 

Wikidata ☰ Q2153291 entry