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Brachyuranochampsa

From Wikipedia, the free encyclopedia
Extinct genus of reptiles

Brachyuranochampsa
Temporal range:Middle Eocene,56–33.9 Ma
Scientific classificationEdit this classification
Domain:Eukaryota
Kingdom:Animalia
Phylum:Chordata
Class:Reptilia
Clade:Archosauromorpha
Clade:Archosauriformes
Order:Crocodilia
Genus:Brachyuranochampsa
Zangerl, 1944
Species

Brachyuranochampsa is anextinctgenus ofcrocodilian.

The only robust occurrence ofBrachyuranochampsa isB. eversolei from theMiddle Eocene ofWyoming.[1] Another species,B. zangerli from the lowerBridger Formation atGrizzly Buttes, has beensynonymized with another primitive crocodilian,"Crocodylus" affinis, also known from the Bridger Formation.[2][3]

Phylogenetic studies have consistently recoveredBrachyuranochampsa as morebasal than thecrown groupCrocodylidae, which consists of allextant (living)crocodiles.[2][4]

The belowcladogram from a 2018 study combiningmorphological data and molecular DNA evidence shows the placement ofBrachyuranochampsa withinCrocodylia.[5]

Crocodylia

References

[edit]
  1. ^Zangerl, R. (1944).Brachyuranochampsa eversolei, gen. et sp. nov., a new crocodilian from the Washakie beds of Wyoming.Annals of Carnegie Museum,30:77-84
  2. ^abBrochu, C. A. (1997)."Morphology, fossils, divergence timing, and the phylogenetic relationships of Gavialis".Systematic Biology.46 (3):479–522.doi:10.1093/sysbio/46.3.479.
  3. ^Brochu, C. A. (2000). "Phylogenetic relationships and divergence timing ofCrocodylus based on morphology and the fossil record".Copeia.2000 (3):657–673.doi:10.1643/0045-8511(2000)000[0657:pradto]2.0.co;2.
  4. ^Brochu, C. A.; Storrs, G. W. (2012). "A giant crocodile from the Plio-Pleistocene of Kenya, the phylogenetic relationships of Neogene African crocodylines, and the antiquity ofCrocodylus in Africa".Journal of Vertebrate Paleontology.32 (3): 587.doi:10.1080/02724634.2012.652324.
  5. ^Michael S. Y. Lee; Adam M. Yates (27 June 2018)."Tip-dating and homoplasy: reconciling the shallow molecular divergences of modern gharials with their long fossil".Proceedings of the Royal Society B.285 (1881).doi:10.1098/rspb.2018.1071.PMC 6030529.PMID 30051855.

External links

[edit]
Pseudosuchia
Neosuchia
Crocodilia
    • see below↓
Basal crocodilians
Mekosuchinae
Others
Orientalosuchina
Alligatorinae
Alligator
Caimaninae
Melanosuchus
Caiman
Deinosuchus riograndensisPurussaurus brasiliensis
Osteolaeminae
Crocodylinae
Crocodylus
Tomistominae
sensu stricto
Tomistoma
Gavialinae
sensu lato
Gavialis
Crocodylus anthropophagusHanyusuchus sinensis
Brachyuranochampsa
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