Delphyodontos
Delphyodontos dacriformes is a prehistoric holocephalan fish from the middle Carboniferous-aged Bear Gulch Limestone Lagerstätte, during the Bashkirian Stage in Montana. The adult form is unknown, as the only fossil specimens are of aborted fetuses or recently born young. Sharp teeth and fecal matter in the fossils suggests that Delphyodontos practiced intrauterine cannibalism, like some modern sharks, such as sand tiger sharks.
| Delphyodontos Temporal range: Bashkirian | |
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| Genus: | Delphyodontos |
| Species: | D. dacriformes |
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| Delphyodontos dacriformes (Lund, 1980) | |
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