Brachyuranochampsa

{{Short description|Extinct genus of reptiles}}

{{Automatic taxobox

| taxon = Brachyuranochampsa

| fossil_range = Middle Eocene, {{fossilrange|56|33.9}}

| authority = Zangerl, 1944

| subdivision_ranks = Species

| subdivision =

• {{extinct}}B. eversolei Zangerl, 1944 (type)

}}

Brachyuranochampsa is an extinct genus of crocodilian.

The only robust occurrence of Brachyuranochampsa is B. eversolei from the Middle Eocene of Wyoming.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 Another species, B. zangerli from the lower Bridger Formation at Grizzly Buttes, has been synonymized with another primitive crocodilian, "Crocodylus" affinis, also known from the Bridger Formation.{{cite journal |last=Brochu |first=C. A. |year=1997 |title=Morphology, fossils, divergence timing, and the phylogenetic relationships of Gavialis |journal=Systematic Biology |volume=46 |issue=3 |pages=479-522 |doi=10.1093/sysbio/46.3.479 |doi-access=free}}{{cite journal |last=Brochu |first=C. A. |year=2000 |title=Phylogenetic relationships and divergence timing of Crocodylus based on morphology and the fossil record |journal=Copeia |volume=2000 |issue=3 |pages=657–673 |doi=10.1643/0045-8511(2000)000[0657:pradto]2.0.co;2}}

Phylogenetic studies have consistently recovered Brachyuranochampsa as more basal than the crown group Crocodylidae, which consists of all extant (living) crocodiles.{{Cite journal | last1 = Brochu | first1 = C. A. | last2 = Storrs | first2 = G. W. | doi = 10.1080/02724634.2012.652324 | title = A giant crocodile from the Plio-Pleistocene of Kenya, the phylogenetic relationships of Neogene African crocodylines, and the antiquity of Crocodylus in Africa | journal = Journal of Vertebrate Paleontology | volume = 32 | issue = 3 | pages = 587 | year = 2012 }}

The below cladogram from a 2018 study combining morphological data and molecular DNA evidence shows the placement of Brachyuranochampsa within Crocodylia.{{cite journal | author=Michael S. Y. Lee |author2=Adam M. Yates |date=27 June 2018 |title=Tip-dating and homoplasy: reconciling the shallow molecular divergences of modern gharials with their long fossil |journal=Proceedings of the Royal Society B |volume=285 |issue=1881 |doi=10.1098/rspb.2018.1071 |pmid=30051855 |pmc=6030529 |doi-access=free}}

{{clade| style=font-size:85%;line-height:85%

|label1=Crocodylia

|1={{clade

|1=Alligatoroidea 100 px

|2={{clade

|1=Prodiplocynodon{{extinct}}

|2={{clade

|1=Asiatosuchus germanicus{{extinct}}

|2={{clade

|1="Crocodylus" affinis{{extinct}}

|2={{clade

|1="Crocodylus" depressifrons{{extinct}}

|2={{clade

|1={{clade

|1="Crocodylus" acer{{extinct}}

|2=Brachyuranochampsa eversolei{{extinct}} }}

|2={{clade

|1=Mekosuchinae

|label2=Longirostres

|2={{clade

|label1=Crocodyloidea

|1={{clade

|1="Crocodylus" megarhinus{{extinct}}

|2=Crocodylidae 90 px }}

|label2=Gavialoidea

|2={{clade

|1=extinct basal Gavialoids{{extinct}}

|label2=Gavialidae

|2={{clade

|1=Gavialis 110 px

|2=Tomistoma 90 px }} }} }} }} }} }} }} }} }} }} }}