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Sinosaurus triassicus

Reptilia - Theropoda

Taxonomy
Sinosaurus triassicus was named by Young (1940). Its type specimen is IVPP V.34, a partial skull, and it is a 3D body fossil. Its type locality is Huangchiatien, Lufeng, which is in a Sinemurian terrestrial horizon in the Lufeng Formation of China. It is the type species of Sinosaurus.

It was considered a nomen dubium by Irmis (2004).

Synonymy list
YearName and author
1940Sinosaurus triassicus Young p. 237
1941Sinosaurus triassicus Bien p. 174
1944Sinosaurus triassicus Young p. 4
1946Sinosaurus triassicus Young p. 5
1948Sinosaurus triassicus Young p. 79
1951Sinosaurus triassicus Young p. 34
1961Sinosaurus triassicus Hu p. 278
1964Sinosaurus triassicus Walker p. 107
1965Sinosaurus triassicus Simmons p. 64
1966Sinosaurus triassicus Young p. 67
1970Sinosaurus triassicus Steel p. 57
1970Sinosaurus triassicus Swinton p. 139
1977Sinosaurus triassicus Rozhdestvensky p. 111
1982Sinosaurus triassicus Yadagiri p. 5
1984Sinosaurus triassicus Welles p. 174
2009Sinosaurus triassicus Wu et al. p. 20
2014Sinosaurus triassicus Xing et al. p. 1653
2016Sinosaurus triassicus Rauhut et al. p. 7
2017Sinosaurus triassicus Wang et al. p. 183
2023Sinosaurus triassicus Zhang et al.

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
RankNameAuthor
classReptilia
subclassEureptilia()
—Romeriida
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
informalAvemetatarsalia
—Ornithodira
—Dinosauromorpha
—Dinosauriformes
—Dinosauria()
orderTheropoda
genusSinosaurus
speciestriassicus

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

†Sinosaurus triassicus Young 1940
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Diagnosis
ReferenceDiagnosis
C.-C. Young 1951Carnosauria of gigantic size, maxilla high. Teeth with long massive root, compressed sharply pointed and curving backwards. Both the anterior and posterior edges are marked by fine serrations.
Z.-C. Zhang et al. 2023Diagnostic Feature From Holotype. The ridge over the lateral surface of maxilla dorsal to the alveolar line.

Revised Features from Referred Specimen. The primary diagnostic features of S. triassicus include (1) the vertical crest developed dorsoventrally from the ventral portion of the maxilla to the nasal crest; (2) ventral border of the antorbital fenestra formed mostly by the anterior process of the jugal, taking more than half of the total length; and (3) the fenestra between the nasal, lacrimal and the prefrontal.
Measurements
No measurements are available
Composition: hydroxyapatiteo
Entire body: yeso
Adult length: 10 to < 100o
Adult width: 1.0 to < 10o
Adult height: 1.0 to < 10o
Architecture: compact or denseo
Ontogeny: accretion, modification of partso
Grouping: solitaryo
Environment: terrestrialo
Locomotion: actively mobileo
Life habit: ground dwellingo
Diet: carnivoreo
Reproduction: oviparouso
Dispersal: direct/internalo
Dispersal 2: mobileo
Created: 2004-12-14 12:50:08
Modified: 2004-12-14 14:50:08
Source: o = order
Reference: Marsh 1875

Age range: base of the Hettangian to the top of the Sinemurian or 201.30000 to 190.80000 Ma

Collections (13 total)


Time interval Ma Country or state Original ID and collection number
Hettangian201.3 - 199.3China (Yunnan) Sinosaurus triassicus (49501 49503 173377)
Hettangian - Sinemurian201.3 - 190.8China (Yunnan) Sinosaurus triassicus (71803 71907 229976 229977)
Sinemurian199.3 - 190.8China (Yunnan) Sinosaurus triassicus (type locality: 49773 49775 59348 66926 72091 78993)