Acanthomorpha

Acanthomorpha (meaning "thorn-shaped" in Greek) is an order of prehistoric fish that was described by Rosen in 1973. Fossils range from the Late Cretaceous to the Early Oligocene (99.6mya)-28.4mya). Older fossils (as recent as 70.6mya) occur in Alberta and Saskatchewan, Canada, and the late Palaeorhynchus zitteli occurs in Romania . Late Cretaceous

Species
Acanthomorph genera include:
 * Asineops
 * Congorhynchus
 * Blochius
 * Enniskillenus
 * Homorhynchus
 * Omosomopsis
 * Palaeorhynchus
 * Pharmacichthys
 * Pseudotetrapterus