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Pepesuchus - Wikipedia

From Wikipedia, the free encyclopedia

Pepesuchus Temporal range: Campanian-Maastrichtian ~84.9–66.0 Ma PreꞒ Ꞓ O S D C P T J K Pg N

Left hemimandible of P. deisae, specimen MCT 1788-R
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Archosauria
Clade:	Pseudosuchia
Clade:	Crocodylomorpha
Clade:	Crocodyliformes
Clade:	†Notosuchia
Clade:	†Sebecosuchia
Clade:	†Sebecia
Family:	†Peirosauridae
Genus:	†Pepesuchus Campos et al., 2011
Species:	†P. deiseae
Binomial name
†Pepesuchus deiseae Campos et al., 2011

Pepesuchus is an extinct genus of carnivorous metasuchian from the Late Cretaceous period. It is a peirosaurid which lived during the Campanian and Maastrichtian stages of the Late Cretaceous in what is now state of São Paulo, Brazil.^[1] It was a semiaquatic crocodylomorph.^[2]

Etymology

Pepesuchus was named by Diogenes A. Campos, Gustavo R. Oliveira, Rodrigo G. Figueiredo, Douglas Riff, Sergio A.K. Azevedo, Luciana B. Carvalho and Alexander W.A. Kellner in 2011 and the type species is Pepesuchus deiseae. The generic name honours Professor José Martin Suárez (known by his colleagues as "Pepe"), and "suchus", from Greek meaning crocodile. The specific name honours the paleontologist Deise Dias Rêgo Henriques.^[3]

Description

Pepesuchus is known from the holotype MN 7005-V, which consists of nearly complete skeleton and skull, and from the paratype MCT 1788-R, a nearly complete skull and lower jaw likely from the same locality of the holotype. The specimens were recovered from the Presidente Prudente Formation of the Bauru Group of the northern Paraná Basin, between the cities of Pirapozinho and Presidente Prudente.^[3] In 2019, new fossil material from the Adamantina Formation was described.^[4]

The skull of Pepesuchus is roughly triangular when viewed from above and is covered in small pits. The jaws are lined with many small pointed teeth. Like other sebecians, Pepesuchus has ziphodont teeth that are laterally compressed and serrated. 17 teeth are present in each maxilla, the most of any sebecian after Stolokrosuchus. There are also numerous dentary teeth in the lower jaw, with the foremost ones directed in a slight forward position. The snout of Pepesuchus is somewhat wider than those of other peirosaurids and has a slight upward curve.^[3]

Classification

Pepesuchus is united with the peirosaurids Peirosaurus, Lomasuchus, and Uberabasuchus on the basis of several shared characteristics. Among these features are five premaxillary teeth with the first two positioned close together and the oval-shaped cross-section of the jugal bone that makes up the lower temporal bar underneath the eye sockets. Pepesuchus also has a ridge on the maxillary shelf of the palate, a feature it shares with all members of the larger clade Sebecia (which includes peirosaurids and the related family Sebecidae).^[3]

References

^ "Pepesuchus". Paleobiology Database. Retrieved 9 February 2024.
^ Jorge Cubo; Mariana V. A. Sena; Paul Aubier; Guillaume Houee; Penelope Claisse; Mathieu G. Faure-Brac; Ronan Allain; Rafael C. L. P. Andrade; Juliana M. Sayão; Gustavo R. Oliveira (2020). "Were Notosuchia (Pseudosuchia: Crocodylomorpha) warm-blooded? A palaeohistological analysis suggests ectothermy" (PDF). Biological Journal of the Linnean Society. 131 (1): 154–162. doi:10.1093/biolinnean/blaa081.
^ ^a ^b ^c ^d Campos et al., 2011
^ Geroto & Bertini, 2019

Bibliography

Campos, Diogenes A.; Oliveira, Gustavo R.; Figueiredo, Rodrigo G.; Riff, Douglas; Azevedo, Sergio A.K.; Carvalho, Luciana B.; Kellner, Alexander W.A. (2011), "On a new peirosaurid crocodyliform from the Upper Cretaceous, Bauru Group, southeastern Brazil" (PDF), Anais da Academia Brasileira de Ciências, 83 (1): 317–327, doi:10.1590/S0001-37652011000100020, retrieved 2019-02-18
Geroto, Caio Fabricio Cezar; Bertini, Reinaldo J. (2019), "New material of Pepesuchus (Crocodyliformes; Mesoeucrocodylia) from the Bauru Group: implications about its phylogeny and the age of the Adamantina Formation", Zoological Journal of the Linnean Society, 185 (2): 312–334, doi:10.1093/zoolinnean/zly037, retrieved 2019-02-18

External links

Data related to Pepesuchus at Wikispecies

Ziphosuchia

Kingdom: Animalia
Phylum: Chordata
Class: Sauropsida
Order: Mesoeucrocodylia
Clade: Metasuchia

Pseudosuchia

see Pseudosuchia
Ziphosuchia	see below↓

Ziphosuchia

Microsuchus?

Sebecia

Mahajangasuchidae

Kaprosuchus
Mahajangasuchus

Sebecidae

Peirosauridae

Amargasuchus Fortignathus? Miadanasuchus Stolokrosuchus?
Pepesuchinae	Barreirosuchus Caririsuchus Epoidesuchus Itasuchus Pepesuchus Roxochampsa
Peirosaurinae	Antaeusuchus Barcinosuchus Barrosasuchus Bayomesasuchus Colhuehuapisuchus Gasparinisuchus Hamadasuchus Kinesuchus Lomasuchus Montealtosuchus Patagosuchus Peirosaurus Pepesuchus Rukwasuchus Uberabasuchus

Notosuchia	see below↓

Notosuchia

Anatosuchus? Araripesuchus Comahuesuchus? Libycosuchus Razanandrongobe? Simosuchus Uruguaysuchus
Candidodontidae?	Candidodon Lavocatchampsa Malawisuchus Pakasuchus

Xenodontosuchia

Baurusuchia

Baurusuchidae

Cynodontosuchus Gondwanasuchus Pabwehshi
Baurusuchinae	Aphaurosuchus Aplestosuchus Baurusuchus Stratiotosuchus
Pissarrachampsinae	Campinasuchus Pissarrachampsa Wargosuchus

Sphagesauria

Notosuchidae

Sphagesauridae

Adamantinasuchus Labidiosuchus Yacarerani
Sphagesaurinae	Armadillosuchus Caryonosuchus Sphagesaurus
Caipirasuchinae	Caipirasuchus Morrinhosuchus

Related categories
Terrestrial crocodylomorphs

Taxon identifiers
Pepesuchus	Wikidata: Q2195225 Wikispecies: Pepesuchus GBIF: 8693596 IRMNG: 1476625 Open Tree of Life: 6150163 Paleobiology Database: 180305
Pepesuchus deiseae	Wikidata: Q20719040 GBIF: 8510174 Open Tree of Life: 6150164 Paleobiology Database: 180306

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