Diceratosaurus

Diceratosaurus is an extinct genus of nectridean tetrapodomorphs within the family Diplocaulidae. Fossils of Diceratosaurus were first described by Edward [Drinker Cope] in 1874. The species D. brevirostris is well known from Jefferson [County, Ohio], with approximately 50 specimens having been collected from the Ohio [Diamond Coal Mine]. The mine was situated in the village of Yellow [Creek, Ohio|Linton], which became obscure soon after operations were completed and the mine closed in 1921.