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Sinraptor Temporal range: Late Jurassic, (Oxfordian) 160 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
S. dongi, Royal Tyrrell Museum
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Clade:	Saurischia
Clade:	Theropoda
Family:	†Metriacanthosauridae
Subfamily:	†Metriacanthosaurinae
Genus:	†Sinraptor Currie and Zhao, 1994
Type species
†Sinraptor dongi Currie and Zhao, 1994
Other species
†S. hepingensis? (Gao, 1992)
Synonyms
Synonyms of S. dongi Yangchuanosaurus dongi (Currie and Zhao, 1994) Gao, 1999 Synonyms of S. hepingensis Yangchuanosaurus hepingensis Gao, 1992

Sinraptor (/sɪnˈræptər/) is a genus of metriacanthosaurid theropod dinosaur from the Late Jurassic. The name Sinraptor comes from the Latin prefix "Sino", meaning Chinese, and "raptor" meaning robber. The specific name dongi honours Dong Zhiming. Despite its name, Sinraptor is not related to dromaeosaurids (often nicknamed "raptors") like Velociraptor. Instead, it was a carnosaur distantly related to Allosaurus. Sinraptor and its close relatives were among the earliest members of the Jurassic carnosaurian radiation. Sinraptor still remains the best-known member of the family Metriacanthosauridae, with some older sources even using the name "Sinraptoridae" for the family.

Discovery

The holotype specimen of Sinraptor was uncovered from the Shishugou Formation during a joint Chinese/Canadian expedition to the northwestern Chinese desert in 1987, and described by Philip J. Currie and Zhao Xijin in 1994. Standing nearly 3 meters (9.8 feet) tall and measuring roughly 7.6 meters (25 feet) in length, two species of Sinraptor have been named. S. dongi, the type species, was described by Currie and Zhao in 1994. A second species, originally named Yangchuanosaurus hepingensis by Gao in 1992, may actually represent a second species of Sinraptor. Whether or not this is the case, Sinraptor and Yangchuanosaurus were close relatives, and are classified together in the family Metriacanthosauridae. Gregory S. Paul proposed that S. dongi would reach 8 metres (26 ft) in length and 1.3 metric tons (1.4 short tons) in body mass, while Holtz estimated it to be 8.8 metres (29 ft) in length.

The dentition of Sinraptor was very similar to that of Allosaurus and indicated that it likely would have preyed upon medium-sized dinosaurs such as stegosaurs by using its blade-like teeth to inflict massive, fatal wounds.

Sinraptor hepingensis, formerly referred to Yangchuanosaurus, is a second species referred to this genus. However, the identity of this species within Sinraptor is questioned by other paleontologists, and the describers of Alpkarakush included this species within Yangchuanosaurus based on their phylogenetic analysis in 2024.

Paleopathology

Sinraptor dongi skull specimen IVPP 10600 exhibits "a variety of gently curving tooth drags or gouges, shallow, circular punctures and one fully penetrating lesion." One rib was broken and healed via telescoping of its capitular shaft.

References

1. ^ Currie, Phillip J.; Zhao, Xi-Jin (1993). "A new carnosaur (Dinosauria, Theropoda) from the Jurassic of Xinjiang, People's Republic of China" (PDF). Canadian Journal of Earth Sciences. 30 (10): 2037–2081. doi:10.1139/e93-179.
2. ^ Carrano, M. T.; Benson, R. B. J.; Sampson, S. D. (2012). "The phylogeny of Tetanurae (Dinosauria: Theropoda)". Journal of Systematic Palaeontology. 10 (2): 211–300. doi:10.1080/14772019.2011.630927. S2CID 85354215.
3. Gao, Yuhui (1992). "Yangchuanosaurus hepingensis – a new species of carnosaur from Zigong, Sichuan" (PDF). Vertebrata PalAsiatica. 30 (4): 313–324.
4. Paul, Gregory S. (2016). The Princeton Field Guide to Dinosaurs. Princeton University Press. p. 97. ISBN 978-1-78684-190-2. OCLC 985402380.
5. Holtz, Thomas R. Jr. (2012). "Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages" (PDF).
6. Hendrickx, Christophe; Stiegler, Josef; Currie, Philip J.; Han, Fenglu; Xu, Xing; Choiniere, Jonah N.; Wu, Xiao-Chun (2020). "Dental anatomy of the apex predator Sinraptor dongi (Theropoda: Allosauroidea) from the Late Jurassic of China". Canadian Journal of Earth Sciences. 57 (9): 1127–1147. doi:10.1139/cjes-2019-0231. hdl:11336/143527.
7. Carrano, M. T.; Benson, R. B. J.; Sampson, S. D. (2012). "The phylogeny of Tetanurae (Dinosauria: Theropoda)". Journal of Systematic Palaeontology. 10 (2): 211–300. Bibcode:2012JSPal..10..211C. doi:10.1080/14772019.2011.630927. S2CID 85354215.
8. Zanno, L. E.; Makovicky, P. J. (2013). "Neovenatorid theropods are apex predators in the Late Cretaceous of North America". Nature Communications. 4: 2827. Bibcode:2013NatCo...4.2827Z. doi:10.1038/ncomms3827. PMID 24264527.
9. Rauhut, Oliver W M; Bakirov, Aizek A; Wings, Oliver; Fernandes, Alexandra E; Hübner, Tom R (2024-08-01). "A new theropod dinosaur from the Callovian Balabansai Formation of Kyrgyzstan". Zoological Journal of the Linnean Society. 201 (4). doi:10.1093/zoolinnean/zlae090. ISSN 0024-4082.
10. Molnar, R. E., 2001, Theropod paleopathology: a literature survey: In: Mesozoic Vertebrate Life, edited by Tanke, D. H., and Carpenter, K., Indiana University Press, p. 337-363.

External links

• The original Chinese text of Gao (1992)'s description of Yangchuanosaurus hepingensis, with pictures.

v t e Theropoda
Kingdom: Animalia Phylum: Chordata Class: Sauropsida Clade: Avemetatarsalia Clade: Dinosauria Avemetatarsalia see Avemetatarsalia Theropoda see below↓
Theropoda Theropoda Chindesaurus? Daemonosaurus? Eodromaeus? Erythrovenator Guaibasaurus? Nhandumirim? Tawa? Herrerasauria? Neotheropoda Dilophosaurus Dolichosuchus? Dracovenator Gojirasaurus Lepidus Liliensternus Lophostropheus Notatesseraeraptor Sarcosaurus Shuangbaisaurus Sinosaurus Tachiraptor Velocipes? Zupaysaurus Coelophysoidea Dracoraptor? Panguraptor Pendraig Podokesaurus Powellvenator Coelophysidae Camposaurus Coelophysis Lucianovenator Megapnosaurus? Panguraptor? Procompsognathus Pterospondylus? Segisaurus Averostra see below↓ Dubious neotheropods Teinurosaurus Halticosaurus
Averostra Averostra Dornraptor Lophostropheus? Ceratosauria Berberosaurus Fosterovenator? Jubbulpuria Lukousaurus? Saltriovenator Ceratosauridae Ceratosaurus Genyodectes Abelisauroidea Betasuchus? Lametasaurus? Ornithomimoides? Ozraptor? Noasauridae Afromimus? Austrocheirus? Berthasaura Compsosuchus? Dahalokely? Deltadromeus? Genusaurus? Kiyacursor Ligabueino Spinostropheus Elaphrosaurinae Elaphrosaurus Huinculsaurus Limusaurus Noasaurinae Laevisuchus Masiakasaurus Noasaurus Velocisaurus Vespersaurus Abelisauridae Chenanisaurus Dryptosauroides? Eoabelisaurus Indosuchus Kryptops Kurupi Rugops Spectrovenator Tarascosaurus Tralkasaurus Xenotarsosaurus Majungasaurinae Arcovenator Dahalokely? Genusaurus Indosaurus Majungasaurus Rahiolisaurus? Rajasaurus Carnotaurinae Majungasaurinae? Brachyrostra Dahalokely? Ekrixinatosaurus Elemgasem Guemesia Ilokelesia Llukalkan Niebla Rahiolisaurus? Skorpiovenator Thanos Furileusauria Abelisaurus Aucasaurus Caletodraco Carnotaurus Elemgasem? Koleken Pycnonemosaurus Quilmesaurus Viavenator Tetanurae see below↓
Tetanurae Tetanurae Calamospondylus? Chienkosaurus? Chilesaurus? Chuandongocoelurus Cruxicheiros? Cryolophosaurus Kaijiangosaurus Kayentavenator Monolophosaurus Pandoravenator Sinosaurus? Szechuanosaurus Vectaerovenator Orionides Megalosauroidea Yunyangosaurus Piatnitzkysauridae Condorraptor Marshosaurus Piatnitzkysaurus Xuanhanosaurus? Megalosauria Streptospondylus? Megalosauridae Eustreptospondylus Megalosaurinae Duriavenator Megalosaurus Torvosaurus Wiehenvenator Afrovenatorinae Afrovenator Dubreuillosaurus Leshansaurus Magnosaurus Piveteausaurus Poekilopleuron? Spinosauridae Camarillasaurus? Cristatusaurus Iberospinus Ostafrikasaurus? Baryonychinae Baryonyx Protathlitis Riojavenatrix Suchosaurus? Vallibonavenatrix? Ceratosuchopsini Ceratosuchops Riparovenator Suchomimus Spinosaurinae Camarillasaurus? Ichthyovenator Irritator Oxalaia Siamosaurus Spinosaurini Sigilmassasaurus Spinosaurus Avetheropoda see below↓
Avetheropoda Avetheropoda Gasosaurus? Lourinhanosaurus? Carnosauria Altispinax Monolophosaurus? Megalosauridae? Spinosauridae? Allosauroidea Asfaltovenator Erectopus Xuanhanosaurus? Piatnitzkysauridae? Metriacanthosauridae Xuanhanosaurus? Yangchuanosaurus Metriacanthosaurinae Alpkarakush Metriacanthosaurus Shidaisaurus Siamotyrannus Sinraptor Allosauria Allosauridae Allosaurus Antrodemus? Epanterias? Saurophaganax? Carcharodontosauria Datanglong Lusovenator Siamraptor Siats? Ulughbegsaurus? Veterupristisaurus Neovenatoridae Chilantaisaurus? Gualicho? Neovenator Siats? Megaraptora? Carcharodontosauridae Acrocanthosaurus Altispinax? Concavenator Eocarcharia Kelmayisaurus Lajasvenator Sauroniops Shaochilong Ulughbegsaurus? Veterupristisaurus Carcharodontosaurinae Carcharodontosaurus Giganotosaurini Giganotosaurus Mapusaurus Meraxes Taurovenator Tyrannotitan Megaraptora? Aoniraptor Bahariasaurus? Deltadromeus? Fukuiraptor Phuwiangvenator Rapator Siats? Chilantaisaurus? Megaraptoridae Aerosteon Australovenator Maip Megaraptor Murusraptor Orkoraptor Tratayenia Coelurosauria see below↓
Coelurosauria Coelurosauria Aratasaurus Asiamericana Bahariasaurus? Bicentenaria Chilantaisaurus? Gualicho? Richardoestesia Sciurumimus? Vayuraptor Xinjiangovenator Zuolong Tyrannoraptora Tyrannosauroidea Chingkankousaurus Labocania? Coeluridae? Coelurus Tanycolagreus? Proceratosauridae Guanlong Kileskus Proceratosaurus Sinotyrannus Yutyrannus Pantyrannosauria Alectrosaurus Aviatyrannis Bagaraatan? Dilong Eotyrannus Jinbeisaurus Juratyrant Moros Santanaraptor Stokesosaurus Suskityrannus Timimus? Timurlengia Xiongguanlong Megaraptora? Eutyrannosauria Appalachiosaurus Bistahieversor? Dryptosaurus Tyrannosauridae Albertosaurinae Albertosaurus Gorgosaurus Tyrannosaurinae Asiatyrannus Nanuqsaurus Alioramini Alioramus Qianzhousaurus Daspletosaurini Daspletosaurus Thanatotheristes Teratophoneini Bistahieversor? Dynamoterror Labocania? Lythronax Teratophoneus Tyrannosaurini Tarbosaurus Tyrannosaurus Zhuchengtyrannus Maniraptoromorpha see below↓ Dubious coelurosaurs Iliosuchus Kakuru Phaedrolosaurus Shanyangosaurus
Maniraptoromorpha Maniraptoromorpha Coelurus? Juravenator Ornitholestes Neocoelurosauria Aniksosaurus Compsognathidae Aniksosaurus? Aristosuchus Beipiaognathus? Compsognathus Huaxiagnathus Mirischia Scipionyx? Sinocalliopteryx Sinosauropteryx Xunmenglong Maniraptoriformes Compsognathidae? Ornithomimosauria Arkansaurus Aviatyrannis? Calamosaurus? Hexing Kinnareemimus Nedcolbertia Nqwebasaurus Thecocoelurus? Valdoraptor Macrocheiriformes Harpymimus Pelecanimimus Shenzhousaurus Deinocheiridae Beishanlong Deinocheirus Garudimimus Harpymimus? Paraxenisaurus? Tyrannomimus Ornithomimidae Aepyornithomimus Anserimimus Archaeornithomimus "Coelosaurus" Dromiceiomimus Gallimimus Ornithomimus Qiupalong Rativates Sinornithomimus Struthiomimus Tototlmimus Maniraptora see Maniraptora includes birds

• Metriacanthosaurids
• Oxfordian life
• Late Jurassic dinosaurs of Asia
• Jurassic China
• Fossils of China
• Paleontology in Xinjiang
• Fossil taxa described in 1994
• Taxa named by Philip J. Currie
• Taxa named by Zhao Xijin
• Multispecific non-avian dinosaur genera