Tersomius acadianum (Case 1910, Maddin et al. 2013; AMNH FR 4719, MCZ 1912; Early Permian) nests between Amphibamus and Dendrerpeton and has unusually elevated orbits.
Case EC 1910. New or little known reptiles and amphibians from the Permian (?) of Texas. Bulletin of the American Museum of Natural History 28, 163–181.
Maddin H, Fröbisch NB, Evans DC and Milner AR 2013. Reappraisal of the Early Permian amphibamid Tersomius
texensis and some referred material. Comptes Rendus Palevol 12:447-461.
