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Temporal range: Middle-Late Jurassic
Hsisosuchus chungkingensis.JPG
Fossil of Hsisosuchus chungkingensis at the Hong Kong Science Museum
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Family: Hsisosuchidae
Young and Chow, 1953
Genus: Hsisosuchus
Young and Chow, 1953
  • H. chungkingensis Young & Chow, 1953 (type) [1]
  • H. chowi Peng & Shu 2005 [2]
  • H. dashanpuensis Gao, 2001 [3]

Hsisosuchus is an extinct genus of crocodyliform from China. Currently there are three species within this genus: H. dashanpuensis is from the Middle Jurassic, while H. chungkingensis and H. chowi are from the Late Jurassic. .[2] It is likely to have been a medium-sized predator (~3 meters in length).[4]

Hsisouchus twojiangensis

Fossils of H. chungkingensis were found in the Shangshaximiao Formation (near Chongqing city). The holotype consists of the cranial skeleton and caudal osteoderms. A more complete specimen was found and described that added significant information on the postcranium of H. chungkingensis.[2][5]

H. dashanpuensis was found in the Xiashaximiao Formation.[2]

H. chowi was found in the Shangshaximiao Formation. The holotype specimen consists of a nearly complete skull (25 cm long), mandibles, most of the vertebral column, partial pectoral and pelvic girdles, most of the forelimbs, fragments of hindlimbs and many osteoderms. It differs from other species of Hsisosuchus in several features of its skull and postcrania.


  1. ^ Young C.C., Chow M.C. 1953. New fossil reptiles from Szechuan China. Acta Paleontologica Sinica 1: 87-109.
  2. ^ a b c d Peng G.-Z., Shu C.-K. 2005. A new species of Hsisosuchus from the Late Jurassic of Zigong, Sichuan, China. Vertebrata PalAsiatica. 43 (4): 312-324.
  3. ^ Gao Y.-H. 2001. A new species Hsisosuchus from Dashanpu, Zigong, Sichuan. Vertebrata PalAsiatica 39 (3): 177-184.
  4. ^ https://sites.google.com/site/snippetsfromourthroughstreams/home/crocodiles-in-the-shadow-of-the-dinosaurs
  5. ^ Li J. L., Wu X. C., Li X. M. 1994. New material of Hsisosuchus chungkingensis from Sichuan, China. Vertebrata PalAsiatica 32 (2): 107-126. (in Chinese with English summary)