Tetragraptus
From Infogalactic: the planetary knowledge core
| Tetragraptus |
|
|---|---|
| File:Graptolite tetragraptus.jpg | |
| Tetragraptus fruticosus | |
| File:Tetragraptus approximatus (Nicholson).jpg | |
| Tetragraptus approximatus | |
Scientific classification  |
|
| Kingdom: | Animalia |
| Phylum: | Hemichordata |
| Class: | †Graptolithina |
| Order: | †Graptoloidea |
| Family: | †Dichograptidae |
| Genus: | †Tetragraptus Salter, 1863 |
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Tetragraptus is an extinct genus of graptolite from the Ordovician.
References
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