Project 419: F. J. Prevosti. 2010. Phylogeny of the large extinct South American Canids (Mammalia, Carnivora, Canidae) using a ‘‘total evidence’’ approach. Cladistics. 26 (5):456-481.
Specimen: Theriodictis platensis (MPS/2)
View: lateral

Abstract

South America currently possesses a high diversity of canids, comprising mainly small to medium-sized omnivorous species, but in the Pleistocene there were large hypercarnivorous taxa that were assigned to Protocyon spp., Theriodictis spp., Canis gezi, Canis nehringi and Canis dirus. These fossils have never been included in phylogenies based on quantitative cladistics, but handconstructed cladograms published in the 1980s included some of them in the South American canine clade and others in the Canis clade. In this work, the phylogenetic position of the large extinct South American canids was studied using a large sample of living and extinct canids, as well as different sources of characters (e.g. DNA and 133 osteological characters). The phylogenetic analysis corroborates the inclusion of Theriodictis and Protocyon in the ‘‘South American clade’’, where C. gezi is also included. In addition, the position of C. dirus as a highly derived Canis species is confirmed. The simultaneous analysis supports hypercarnivory having arisen at least three times in Caninae and once in the ‘‘South American clade’’. The combination of the phylogenetic analyses, the fossil record and divergence dates estimated in previous works suggests that at least three or four independent lineages of the ‘‘South American clade’’ invaded South America after the establishment of the Panama bridge around 3 million years ago, plus other events corresponding to the immigration of Urocyon and Canis dirus.


Read the article »

Project DOI: 10.7934/P419, http://dx.doi.org/10.7934/P419
This project contains
  • 1 Media
  • 4 Documents
  • 1 Taxon
  • 1 Specimen
Total size of project's media files: 377.96k

Download Project SDD File
Currently Viewing:
MorphoBank Project 419

    Authors' Institutions

    • Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)



    Members

    member name taxa specimens media
    MorphoBank Curator
    Project Administrator
    000
    Maureen Admin
    Full membership
    000
    Pancho Prevosti
    Full membership
    000


    Project has no matrices defined.



    Project views

    type number of views Individual items viewed (where applicable)
    Total project views15688
    Project overview3499
    Media views4362M86139 (698 views); Media search (3664 views);
    Documents list1204
    Specimen list2251
    Views for media list1306
    Taxon list2160
    Bibliography906




    Project downloads

    type number of downloads Individual items downloaded (where applicable)
    Total downloads from project261
    Media downloads3M86139 (3 downloads);
    Project downloads239
    Document downloads19Appendix 1 (3 downloads); Appendix S2 (2 downloads); TNT file (14 downloads);