After Holmes, Carroll & Reisz, 1998, and Yates & Warren, 2000
<==o †Eryopoidea |--o †Zatrachydidae Williston, 1910 [Zatracheidae (lapsus calami)] | |-- †Acanthostomatops vorax Steen, 1937 | |--o †Dasyceps Huxley, 1859 | | |-- †D. bucklandii (Lloyd, 1850) [Labyrinthodon Bucklandi Lloyd, 1850] | | `-- †D. microphthalmus (Cope, 1896) | |--o †Stegops Moodie, 1909 | | |-- S. divaricata (Cope, 1885) Moodie, 1909 [Ceraterpeton divaricatum Cope, 1885; Erpetosaurus tuberculatus Moodie, 1907] | | |-- †S. newberryi (Cope, 1875) hook & Baird, 1986 [Colosteus newberryi Cope, 1875] | | `?- †S. sp. [Hook & Baird, 1992] | `-- †Zatrachys serratus Cope, 1878 [Aspidosaurus serratus (Cope, 1881) Watson, 1919] [Acanthostoma, ?Acanthostomatops] `--+--o †Parioxys Cope, 1878 [Parioxyidae Moustafa, 1955] | |-- †P. ferricolus Cope, 1878 | `-- †P. bolli Carroll, 1964 `--o †Eryopidae Cope, 1882 |--o †Cheliderpeton Fritsch, 1877 [Chelyderpeton lapsus calami] | |-- †C. vranyi Fritsch, 1877 | `-- †C. latirostre (Boy, 1993) [Archegosaurus latrostre Boy, 1993] |--o †Clamorosaurus Gubin, 1983 | |-- †C. nocturnus Gubin, 1983 | `-- †C. borealis Gubin, 1983 |-- †Eryops megacephalus Cope, 1877 |--o †Onchiodon Geinitz, 1861 [taxonomic history] | |-- †O. labyrinthicus Geinitz, 1861 [taxonomic history] | |?- †O.? foverolatum (Fritsch, 1901) Romer, 1947 [taxonomic history] | |-- †O. manebachensis (Langehan, 1909) | |-- †O. langenhani Werneburg, 1989 | `-- †O. sp. `-- †Osteophorus romeri Meyer, 1856 [Sclerocephalus romeri (Meyer, 1860) Fritsch, 1901
Reference(s):
- Carroll, R. L., 1988: Vertebrate paleontology and evolution.
–W. H. Freeman and company, New York, 1988, 698 - Carroll, R. L., 1988: Appendix. 594-648.
in Carroll, R. L. 1988: Vertebrate paleontology and evolution.
–W. H. Freeman and company, New York, 1988, 698 - Holmes, R. B., Carroll, R. L. & Reisz, R. R., 1998: The first articulated skeleton of Dendrerpeton acadianum (Temnospondyli: Dendrerpentonidae) from the Lower Pennsylvanian locality of Joggins, Nova Scotia, and a review of its relationships.
–Journal of Vertebrate Paleontology: Vol. 18, #1, pp. 64-79 - Yates, A. M. & Warren, A. A., 2000: The phylogeny of the “higher” temnospondyls (Vertebrata: Choanata) and its implications for the monophyly and origins of Stereospondyla.
–Zoological Journal of the Linnean Society: Vol. 128, pp. 77-121