 One of the skulls assigned the name "Asaphestera platyris" by Steen appeared to be a valid taxon, but instead of a microsaur it was the oldest known synapsid, possibly an eothyridid.Dawson's ""Hylerpeton" intermedium" was determined to be an indeterminate tetrapod and a "nomen dubium".Additional "Asaphestera" material was named as a new genus of microsaur, "Steenerpeton".