Doswelliidae

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Doswelliidae
Temporal range: Middle - Late Triassic
Doswellia BW.jpg
Life restoration Doswellia kaltenbachi, the most well known dosweliid
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Archosauriformes
Family: Doswelliidae
Weems, 1980
Life restoration of Archeopelta arborensis

Doswelliidae is a family of carnivore archosauriforms. Doswelliids existed in North and South America during the Middle–Late Triassic period and were among the most derived non-archosaurian archosauriforms. The family was named by R. E. Weems in 1980 and it has been placed in its own suborder, Doswelliina.[1] The Doswelliidae has long been considered a monospecific family of basal archosauriforms represented by Doswellia kaltenbachi from the Late Triassic of North America. However, a recent cladistic analysis published in 2011 recovered Archeopelta, Doswellia and Tarjadia within a monophyletic Doswelliidae. The phylogenetic analysis also indicates that Doswellidae is the closest large monophyletic clade to Archosauria (only the Chinese archosauriform Yonghesuchus nested closer to archosaurs). Below is the cladogram from the 2011 analysis:[2]


Archosauromorpha

Mesosuchus




Prolacerta


Archosauriformes

Proterosuchus




Vancleavea




Erythrosuchus




Euparkeria




Chanaresuchus




Turfanosuchus


Doswelliidae

Tarjadia




Doswellia



Archeopelta






Yonghesuchus



Archosauria











A fourth genus and species of dosweliid, Jaxtasuchus salomoni, was named in 2013 from several skeletons found in the Ladinian-age Lower Keuper of Germany. It was found to be the sister taxon of Doswellia, while Archaeopelta was found to be a more basal dosweliid.[3]

References[edit]

  1. ^ R. E. Weems (1980). "An unusual newly discovered archosaur from the Upper Triassic of Virginia, U.S.A.". Transactions of the American Philosophical Society, New Series 70 (7): 1–53. doi:10.2307/1006472. 
  2. ^ Julia B. Desojo, Martin D. Ezcurra, Cesar L. Schultz (2011). "An unusual new archosauriform from the Middle–Late Triassic of southern Brazil and the monophyly of Doswelliidae". Zoological Journal of the Linnean Society 161 (4): 839–871. doi:10.1111/j.1096-3642.2010.00655.x. 
  3. ^ Schoch, R. R.; Sues, H. D. (2013). "A new archosauriform reptile from the Middle Triassic (Ladinian) of Germany". Journal of Systematic Palaeontology: 1. doi:10.1080/14772019.2013.781066.  edit