Brachyopomorpha
Extinct clade of amphibians
From Wikipedia, the free encyclopedia
Brachyopomorpha is a clade of stereospondyl temnospondyls within the infraorder Trematosauria. It was constructed in 2000 to include Bothriceps australis and the superfamily Brachyopoidea.[1] It is phylogenetically defined as a stem-based taxon including Pelorocephalus and all taxa closer to it than to Rhytidosteus. In contrast, Brachyopoidea is defined as a node-based taxon including Brachyops and Pelorocephalus and all descendants of their most recent common ancestor. Because Bothriceps is not thought to be a descendant of that recent common ancestor and would be more basal than it, the genus is placed just outside Brachyopoidea and is considered to be a sister taxon to the clade.[1][2]
| Cladogram of Brachyopomorpha | |||
| |||
| Damiani and Kitching, 2003[3] |
| Brachyopomorpha Temporal range: Early Triassic - Middle Cretaceous, | |
|---|---|
| |
| Pelorocephalus tenax | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Tetrapoda |
| Order: | †Temnospondyli |
| Suborder: | †Stereospondyli |
| Clade: | †Trematosauria |
| Clade: | †Brachyopomorpha Warren and Marsicano, 2000 |
| Genera and superfamilies | |
Bothriceps was once considered to be a brachyopid within Brachyopoidea, but is now placed on the brachyopoid stem closer to Brachyopoidea than to Rhytidosteidae due to the presence of several plesiomorphies (ancestral characters). The probable presence of a tabular horn in Bothriceps also suggests that it is a basal brachyopomorph rather than a brachyopid.[1]
Keratobrachyops, once assigned to Chigutisauridae, is now thought to be a basal brachyopomorph closely related to Bothriceps.[3]
