Ioscion
Extinct genus of fishes
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.
Sources and credits
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