| Thrinacoselache | |
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| An artist's illustration of Thrinacoselache gracia | |
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| A fossil of Thrinacoselache gracia | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Family: | †Thrinacodontidae |
| Genus: | †Thrinacoselache Grogan & Lund, 2008 |
| Referred species | |
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| Synonyms | |
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Thrinacoselache is an extinct genus of basal elasmobranch from the Serpukhovian-aged lagerstatte, Bear Gulch, of what is now Montana. Thrinacoselache could grow up to 1 meter long but was barely 2 cm tall. Its serpentine body and long thin jaws would've given it a pike and conger eel-like appearance rather than a shark's.