A new crocodilianfrom the Jurassic of Thailand, Sunosuchus thailandicus n. sp. (Mesosuchia, Goniopholididae)), and the palaeogeographical history of South-East Asia in the Mesozoic

Buffetaut, Éric; Ingavat, Rucha

doi:10.1016/s0016-6995(80)80042-8

Cited by 45 publications

(26 citation statements)

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“…It has not, however, been adequately described. Sunosuchus thailandicus (Buffetaut and Ingavat 1980) from the Jurassic of Thailand is represented by only the posterior portion of the right ramus of the mandible. Sunosuchus shartegensis (Efimov 1988) from the Upper Jurassic or Lower Cretaceous of Mongolia is based on an incomplete skull and a fragment of the r i~h t ramus of the mandible.…”

Section: Introductionmentioning

confidence: 99%

Sunosuchus junggarensis sp.nov. (Archosauria: Crocodyliformes) from the Upper Jurassic of Xinjiang, People's Republic of China

Wu¹,

Brinkman²,

Russell³

1996

Can. J. Earth Sci.

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A new species of Crocodyliformes, Sunosuchus junggarensis, is established on the basis of six individuals from the Upper Jurassic of the Junggar Basin, Xinjiang, northwest China. It differs from other species of Sunosuchus primarily in having a dorsoventrally depressed supraoccipital that, in occipital view, lacks a median crest; a frontal that is ridged anteriorly; a distinct depression distal to the foramen aereum on the dorsal surface of the quadrate; and an elongate, undivided maxillary depression. Cranial ontogenetic variation in S. junggarensis is discussed. Sunosuchus is probably a goniopholidid crocodyliform. It is distinguished from other genera of the Goniopholididae by a narrow and elongate snout, a small skull table, a partially ridged frontal, a pair of anteriorly located anterior palatal fenestrae, a lateroventrally -mediodorsally expanded retroarticular process, some enlarged pits on the frontal, and an elongate mandibular symphysis, with the splenial forming a small part of it. Sunosuchus, Eutretauranosuchus, and some species of Goniopholis may form a monophyletic group within the Mesoeucrocodylia.Resum6 : Une nouvelle espkce de Crocodyliformes, Sunosuchus junggarensis, est Ctablie et fondke sur six individus provenant de lithologies du Jurassique supkrieur, dans le bassin de Junggar, Xinjiang, le nord-ouest de la Chine. Elle se distingue des autres espkces de Sunosuchus, principalement par son supraoccipital dkprimk dans la region dorsoventrale, qui, en w e occipitale, est caractkrisk par l'absence d'une crkte mkdiane; un frontal muni d'un bourrelet antkrieur; une dkpression distale distincte au foramen aereum apparaissant sur la surface dorsale de 1'0s carrk; et une dkpression maxillaire indivise et allongke. Nous discutons de la variation ontogknique crlniale dans S. junggarensis. Sunosuchus est probablement un crocodyliforme goniopholidide. Il diff'ere des autres genres de GoniopholididCs par un museau Ctroit et allongC, une table crlnienne rkduite, un frontal partiellement renfle par un bourrelet, une paire de fenktres palatales antkrieures en position antkrieure, une apophyse rktroarticulaire ktendue dans les rkgions latkroventral-mkdiodorsal, de petits creux Cvasks sur le frontal et une symphyse mandibulaire allongte dont une petite portion est occupCe par le splknial. Sunosuchus, Eutretauranosuchus et quelques espkces de Goniopholis peuvent former un groupe monophylktique i l'intkrieur des Mesoeucrocodylia.[Traduit par la r&laction]

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Section: Introductionmentioning

confidence: 99%

Sunosuchus junggarensis sp.nov. (Archosauria: Crocodyliformes) from the Upper Jurassic of Xinjiang, People's Republic of China

Wu¹,

Brinkman²,

Russell³

1996

Can. J. Earth Sci.

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show abstract

“…The latter differs from S. shunanensis by the presence of a ridge dividing the dorsally arched quadrate and the absence of a "flange" at the basioccipital-exoccipital suture ventrally to the occipital condyle. SGP 2001/35 differs from S. thailandicus (Buffetaut & Ingavat 1980 and S. miaoi (Buffetaut 1986;Young 1948) by its retroarticular process, which is in the latter two much broader and not as strongly ventrally directed. Furthermore, the dorsal mandibular margin of S. miaoi and Sunosuchus from the Toutunhe Formation ) is anterior to the glenoid as high as the latter, whereas it slopes ventrally in SGP 2001/35.…”

Section: Ontogenetic Status Of the Specimenmentioning

confidence: 93%

“…Sunosuchus thailandicus Buffetaut & Ingavat, 1980 Range. Early Jurassic -Early Cretaceous; Thailand, China.…”

Section: Systematic Paleontologymentioning

confidence: 99%

“…The description and drawings of S. shartegensis (Efimov 1988a(Efimov , 1988b are based on an almost complete skull with a fragment of the right lower jaw, but are unfortunately insufficient. S. thailandicus (Buffetaut & Ingavat 1980 was described from a nearly complete preserved lower jaw. Cranial and postcranial elements of Sunosuchus sp.…”

Section: Ontogenetic Status Of the Specimenmentioning

confidence: 99%

“…Stratigraphical and geographical occurrence of Sunosuchus and other goniopholidids Buffetaut & Ingavat (1980 described a lower jaw of the species S. thailandicus from the Phu Kradung Formation of the Khorat Group of NE Thailand (Fig. 5).…”

Section: Ontogenetic Status Of the Specimenmentioning

confidence: 99%

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