Melvius

Melvius is a genus of vidalamiin amiid ray-finned fish from the Late Cretaceous. The type species, Melvius thomasi, was described by Bryant in 1987 from Hell [Creek Formation]. A second species Melvius chauliodous, was named and described by Hall and Wolberg in 1989 from Kirtland Formation, and it is now considered to be one of the index taxa of the Kirtlandian land-vertebrate age.

Description

Both species of Melvius were very large. A vertebral remain of M. thomasi would have belonged to a fish with standard length of, and there are some specimens that exceed the height of that vertebra. Total length of this species would be at least. However, M. thomasi was dwarfed by M. chauliodous, as a specimen of M. chauliodous with abdominal centra which is wide would indicate a standard length of over, and there is even larger abdominal centra which is wide.