Tetragraptus
| Tetragraptus Temporal range: Ordovician | |
|---|---|
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| Tetragraptus fruticosus | |
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| Tetragraptus approximatus | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Hemichordata |
| Class: | †Graptolithina |
| Order: | †Graptoloidea |
| Family: | †Dichograptidae |
| Genus: | †Tetragraptus Salter, 1863 |
Tetragraptus is an extinct genus of graptolite from the Ordovician period.
References
- Don Lessem & Jan Sovak (1999). Dinosaurs to Dodos: An Encyclopedia of Extinct Animals. Scholastic. ISBN 978-0-590-31684-2.
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