 In 1912, Williston described the discovery of an additional specimen, collected by himself at the same locality as the previous specimens.More "Limnoscelis" fossils were collected between 1966 and 1973 by the paleontologist Peter P. Vaughn from the Sangre de Cristo Formation in Colorado, which would later be attributed to the species "Limnoscelis dynatis".Vaughn, however, did not initially recognize these materials as belonging to "Limnoscelis", instead attributing several fossil elements to the Rhachitomi or the Anthracosauria.