Project 2703: A. M. Yates, N. S. Pledge. 2017. A Pliocene mekosuchine (Eusuchia: Crocodilia) from the Lake Eyre Basin of South Australia. Journal of Vertebrate Paleontology. 37 (1):e1244540.
Specimen: † Crocodylus affinis (usnm/paleobiology:v12719)
View: skeleton

Abstract

A new genus and species of crocodilian, Kalthifrons aurivellensis, is described from a channel sand deposit incised into the Oligo-Miocene Etadunna Formation on the western shore of Lake Palankarinna in the Lake Eyre Basin, South Australia. The channel sand is interpreted as an outcrop of the Mampuwordu Sand Member of the Tirari Formation, which has been assigned an early Pliocene age. The taxon can be diagnosed by the extremely elongate and narrow anterior process of the frontal pair and a distinctively beveled and laterally expanded prefrontal contribution to the orbit margin. The broadly triangular rostrum, at least partially interlocking dentition, smooth dental carinae, and weak labiolingual compression resemble unspecialized crocodilian species, and it was probably a generalist aquatic predator. It possessed character states that indicate that it was not a member of Crocodylus, and it is referred to the endemic Australasian clade Mekosuchinae. The first overlying unit in the Lake Eyre Basin sequence to produce diagnostic crocodilian remains is the mid- to late Pliocene Pompapillina Member of the Tirari Formation. It contains a true species of Crocodylus but no indication of Kalthifrons aurivellensis or indeed any other mekosuchine, indicating that the latter may have been driven to extinction via competitive replacement.


Read the article »

Article DOI: 10.1080/02724634.2017.1244540

Project DOI: 10.7934/P2703, http://dx.doi.org/10.7934/P2703
This project contains
  • 2 Media
  • 2 Documents
  • 2 Taxa
  • 1 Specimen
Total size of project's media files: 3 MB

Download Project SDD File
Currently Viewing:
MorphoBank Project 2703
  • Creation Date:
    06 June 2017
  • Publication Date:
    06 June 2017
  • Project views: 4447

    Authors' Institutions

    • Museum of Central Australia, Alice Springs, Northern Territory

    • South Australian Museum



    Members

    member name taxa specimens media
    MorphoBank Curator
    Project Administrator
    Last logged in 06/06/17
    212


    Project has no matrices defined.



    Project views

    type number of views Individual items viewed (where applicable)
    Total project views4447
    Project overview767
    Taxon list976
    Media views1274Media search (924 views); M451585 (200 views); M451584 (150 views);
    Specimen list579
    Views for media list296
    Documents list333
    Bibliography222




    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project79
    Project downloads79