. "Delphyodontos dacriformes was a prehistoric holocephalid fish from the early Carboniferous, from the Bear Gulch Limestone Lagerst\u00E4tte, in Montana. Its fossils consist mainly of aborted fetuses or newly hatched young. Sharp teeth and fecal matter in the fossils suggests that Delphyodontos practiced intrauterine cannibalism, like some modern sharks, such as gray reef sharks."@en . . . "Delphyodontos dacriformes"@en . . . .