Tetragraptus Temporal range: Ordovician
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Tetragraptus fruticosus | |
Tetragraptus approximatus | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Hemichordata |
Class: | Pterobranchia |
Order: | †Graptoloidea |
Family: | †Dichograptidae |
Genus: | †Tetragraptus Salter, 1863 |
Species | |
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Tetragraptus is an extinct genus of graptolites from the Ordovician period.