This tree diagram shows the relationships between several groups of organisms.
The root of the current tree connects the organisms featured in this tree to their containing group and the rest of the Tree of Life. The basal branching point in the tree represents the ancestor of the other groups in the tree. This ancestor diversified over time into several descendent subgroups, which are represented as internal nodes and terminal taxa to the right.
You can click on the root to travel down the Tree of Life all the way to the root of all Life, and you can click on the names of descendent subgroups to travel up the Tree of Life all the way to individual species.close box
Eorhinophrynus septentrionalis is an extinct species known from a few fragments from the Middle Eocene (Bridgerian) of Wyoming. It is roughly the same age as Chelomophrynus bayi.
Fragments of what may be a different species were reported by Estes (1975) as Eorhinophrynus sp. from the late Paleocene.
Estes, R. 1975. Lower vertebrates from the Fort Union Formation, Late Paleocene, Big Horn Basin, Wyoming. Herpetologica 31(4):365-385.
Hecht, M. K. 1959. Reptiles and amphibians. Pages 130-144 in The Geology and Paleontology of the Elk Mountain and Tabernacle Butte Area, Wyoming. (P. O. McGrew, ed.).
Henrici, A. C. 1991. Chelomophrynus bayi (Amphibia, Anura, Rhinophrynidae), a new genus and species from the Middle Eocene of Wyoming: Ontogeny and relationships. Ann. Carnegie Mus. 60(2):97-144.
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- First online 29 November 2008
- Content changed 29 November 2008
Citing this page:
Tree of Life Web Project. 2008. Eorhinophrynus. Version 29 November 2008 (under construction). http://tolweb.org/Eorhinophrynus/17524/2008.11.29 in The Tree of Life Web Project, http://tolweb.org/