Ioscion morgani is an extinct prehistoric marine ray-finned fish that lived during the Upper Miocene subepoch of what is now the Tortonian-aged Monterey Formation of Southern California. It is primarily known from incomplete fossils, such as the holotype, which consists of a broken backbone. The morphology of the head is unknown.

It was described by David Starr Jordan, who suggested that enough of the animal's anatomy suggests a relationship with the jackfishes of Carangidae. It was moved to its own family, Ioscionidae, by David (1943). However, a 2009 study refuted this placement and found it to be a drumfish based on its anatomy and fin placement.

See also

• Prehistoric fish

• List of prehistoric bony fish

References