Burkesuchus

Burkesuchus Temporal range: Late Jurassic, 147.1–146.9 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Computer reconstruction, with red bones corresponding to the original material
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Archosauria
Clade:	Pseudosuchia
Clade:	Crocodylomorpha
Clade:	Crocodyliformes
Clade:	Neosuchia
Genus:	†Burkesuchus Novas et al., 2021
Species:	†B. mallingrandensis
Binomial name
†Burkesuchus mallingrandensis Novas et al., 2021

Burkesuchus (meaning "Coleman Burke's crocodile") is an extinct genus of basal neosuchians from the Upper Jurassic (Tithonian)-aged Toqui Formation of southern Chile. The genus is currently represented by a single species B. mallingrandensis, named and described in 2021 on the basis of the holotype and additional referred specimens.^[1] Burkesuchus mallingrandensis was noticeably small being around an estimated 70 cm (27.5 inches) in length. The cranium is dorsoventrally depressed and transversely wide posteriorly and distinguished by a posteroventrally flexed wing-like squamosal. Burkesuchus was a small carnivore likely on invertebrates animals such as insects, crustaceans and may had feed on small aquatic vertebrates like fish. B. mallingrandensis did not have the ability to feed on large prey items or tear large chunks of meat like modern day crocodiles do.^[2] The holotype SQO.PV 17700, consist of a cervical neural arch, partial neurocranium, four dorsal vertebrae, right scapula, a right coracoid, right humerus, a ulna, left ischium, distal end of the right femur, one cervical and two dorsal osteoderms. The paratype SQO.PV 17701 fossil remains consist of a nearly complete right femur, two doral vertebrae and one dorsal osteoderm.^[3] The fossils was discovered in 2014 but was described as a new genus and species on July 23, 2021.^[4]

Phylogeny

Burkesuchus mallingrandensis belonged to the Mesoeucrocodylia clade which includes all living crocodiles and other relatives.^[5]

Below is a cladogram showing the phylogenetic placement of Burkesuchus according to Novas et al. (2021):^[1]

References

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Neosuchia

Kingdom: Animalia Phylum: Chordata Class: Sauropsida Clade: Pseudosuchia Clade: Metasuchia
Pseudosuchia see Pseudosuchia Neosuchia see below↓

Neosuchia
Neosuchia †Burkesuchus †Isisfordia †Karatausuchus †Khoratosuchus †Montsecosuchus †Stolokrosuchus? †Susisuchus †Tadzhikosuchus? †Wahasuchus? †Zhyrasuchus? †Thalattosuchia? †Tethysuchia Pholidosauridae Anglosuchus Chalawan Crocodilaemus Dakotasuchus Elosuchus Meridiosaurus Oceanosuchus Pholidosaurus Sarcosuchus Terminonaris Vectisuchus Woodbinesuchus Dyrosauridae Acherontisuchus Anthracosuchus Arambourgisuchus Atlantosuchus Brachiosuchus Cerrejonisuchus Chenanisuchus Congosaurus Dorbignysuchus Dyrosaurus Fortignathus Guarinisuchus Hyposaurus Luciasuchus Phosphatosaurus Rhabdognathus Rodeosuchus Sabinosuchus? Sokotosuchus Tilemsisuchus †Atoposauridae Alligatorellus Alligatorium Aprosuchus Atoposaurus Knoetschkesuchus Sabresuchus Theriosuchus Varanosuchus †Stomatosuchidae Laganosuchus Stomatosuchus †Paluxysuchidae Deltasuchus Paluxysuchus †Goniopholididae Amphicotylus Anteophthalmosuchus Calsoyasuchus Coelosuchus Denazinosuchus Diplosaurus Eutretauranosuchus Goniopholis Hulkepholis Nannosuchus Ophiussasuchus Oweniasuchus Pinacosuchus? Siamosuchus Sunosuchus Symptosuchus? †Bernissartiidae Bernissartia Koumpiodontosuchus †Paralligatoridae Batrachomimus Brillanceausuchus Kansajsuchus Paralligator Rugosuchus Scolomastax Shamosuchus Tarsomordeo Turanosuchus Wannchampsus Yanjisuchus Eusuchia see below↓

Eusuchia
Eusuchia †Borealosuchus †Confractosuchus †Dolichochampsa †Gilchristosuchus †Heterosuchus †Isisfordia? †Portugalosuchus †Pristichampsus †Susisuchus? †Titanochampsa? †Atoposauridae? †Bernissartiidae? †Paralligatoridae? †Hylaeochampsidae Acynodon? Hylaeochampsa Iharkutosuchus Pachycheilosuchus? Pietraroiasuchus Turcosuchus Unasuchus †Allodaposuchidae Agaresuchus Allodaposuchus Arenysuchus? Ischyrochampsa Lohuecosuchus Massaliasuchus Musturzabalsuchus? †Aegyptosuchidae Aegyptosuchus Aegisuchus †"Thoracosaurs" Argochampsa Eogavialis Eosuchus Eothoracosaurus Thoracosaurus †Planocraniidae Boverisuchus Duerosuchus Planocrania Crocodilia see Crocodilia for extant taxa, and Extinct Crocodilia for extinct ones

• See also: Coelognathosuchia
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