Eogyrinus

Pholiderpeton (Eogyrinus) attheyi

"Eogyrinus", Anthracosaurus, and Pteroplax all share the same time interval (Westphalian B) and some of the same sites (Newsham, Airdrie). As a result, individual specimens were frequently shuffled between the three taxa for over a century. Much of the confusion was resolved when "Eogyrinus" was fully redescribed by Panchen (1964, 1966, 1972). Clack (1987) dealt with the last few points of contention: an Anthracosaurus skull table from Newsham and a Pholiderpetoninterclavicle from Airdrie, each previously misidentified as the opposite genus. Watson's 1926 reconstruction of "Eogyrinus" attheyi included a large boxy shoulder girdle, but later authors concluded that this set of bones actually belonged to a lobe-finned fish, probably a rhizodont.