Leptecodon

Leptecodon (meaning "small tooth") is a genus of prehistoric ray-finned fish which was described by Williston in 1899 and was possibly preyed on by other sea creatures.^[1] However, it was a hunter of smaller creatures itself. This fish sometimes hid in clams such as Inoceramus. The first-discovered fossil was inside a clam. Many believe that Leptecodon had formed a symbiotic relationship with the clam rather than get eaten by Inoceramus. Another fish from the same time and place, Caproberyx, has also been found among Inoceramus.

Leptecodon
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Aulopiformes
Family:	†Enchodontidae
Genus:	†Leptecodon
Species:	†L. rectus
Binomial name
†Leptecodon rectus Williston, 1899