Topic
Acroplous
About: Acroplous is a research topic. Over the lifetime, 3 publications have been published within this topic receiving 71 citations.
Papers
TL;DR: A cladistic analysis of 87 characters and 12 temnospondyl taxa indicates that the Eobrachyopidae (Acroplous and Isodectes) may be a paraphyletic group, with IsodECTes filling a more basal position within the Dvinosauroidea.
Abstract: The Early Permian dvinosaur temnospondyl Acroplous vorax Hotton, 1959 is redescribed based on new specimens from the Eskridge Formation of Nebraska, and an unpublished specimen collected from the Speiser Shale of Kansas in 1960, along with reanalysis of previously described Acroplous specimens. The Nebraska Acroplous specimens are part of the oldest Permian (Asselian) nonmarine vertebrate faunal assemblage in the Paleozoic midcontinental sequence of the United States based upon invertebrate biostratigraphy. This study reveals previously unknown anatomical features for Acroplous, requiring a reassessment of the genus and the Eobrachyopidae. Among the new findings for Acroplous are: an anterior dorsal fenestra; prefrontals excluded from the external naris; lacrimal contacting the orbit; denticulated palatine, ectopterygoid and pterygoid; a lack of a postglenoid transverse trough; an unusual interlocking mandibular symphysis, and an elongate rod-like ilium. A cladistic analysis of 87 characters and ...
27 citations
TL;DR: The cranial morphology of Acroplous vorax Hotton, 1959, is restudied on the basis of new specimens collected from the Speiser Shale Formation (Council Grove Group, Lower Permian) of Wabaunsee County, Kansas as mentioned in this paper.
Abstract: The cranial morphology of Acroplous vorax Hotton, 1959, is restudied on the basis of new specimens collected from the Speiser Shale Formation (Council Grove Group, Lower Permian) of Wabaunsee County, Kansas. Acroplous, assigned to the trimerorhachoid family Saurerpetontidae, is characterized by complete absence of the intertemporal and shortened postparietal. Saurerpetontids are further distinguished from other trimerorhachoids by the presence of a dorsally exposed palatine.
21 citations
TL;DR: Five saurerpetontid temnospondyl amphibian specimens from the Lower Permian Arroyo Formation of Baylor County, Texas are redescribed under the binomen Isodectes obtusus comb, with some of the resemblances described by Watson appearing to be artefacts of crushing of an individual specimen.
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2008 | 1 |
| 1998 | 1 |
| 1990 | 1 |