Tetragraptus
Tetragraptus is an extinct genus of graptolites from the Ordovician period.
Tetragraptus | |
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Tetragraptus fruticosus | |
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Tetragraptus approximatus | |
Scientific classification ![]() | |
Kingdom: | Animalia |
Phylum: | Hemichordata |
Class: | Pterobranchia |
Order: | †Graptoloidea |
Family: | †Dichograptidae |
Genus: | †Tetragraptus Salter, 1863 |
Species | |
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Species[1]
- 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).[1]
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References
- Tetragraptus at Fossilworks.org
Further reading
- Don Lessem & Jan Sovak (1999). Dinosaurs to Dodos: An Encyclopedia of Extinct Animals. Scholastic. ISBN 978-0-590-31684-2.
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