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Temporal range: Early Cretaceous, Hauterivian–Barremian
Restoration of Wakinosaurus
Scientific classification

Okazaki, 1992
  • W. satoi Okazaki, 1992 (type)

Wakinosaurus (meaning "Wakino lizard") is a genus of theropod dinosaur from the Early Cretaceous (Hauterivian-Barremian) Sengoku Formation of Kyushu, Japan. The genus is a tooth taxon, based solely on a tooth.

In 1990 Masahiro Sato in Fukuoka found the tooth of a theropod. The same year Yoshihiko Okazaki first reported on the find.[1] In 1992 Okazaki named the type species, Wakinosaurus satoi. The generic name refers to the Wakino Subgroup of the Kwanmon Group, of which the Sengoku Formation is a member. The specific name honours Sato.[2]

The holotype is KMNH VP 000,016, a single damaged tooth, the crown of which must have been about seven centimetres long. Its base length is 32.9 millimetres (1.30 in), its base width 10.4 millimetres (0.41 in). It has about thirty serrations per five millimetres.[3]

Wakinosaurus was initially described as a megalosaurid but is today considered a nomen dubium and an indeterminate neotheropod.


  1. ^ Okazaki, Y., 1990, "Discovery of dinosaur remain from the Kwanmon Group", Abstract of the Annual Meeting of the Paleontological Society of Japan, 37
  2. ^ Okazaki, Y. (1992). A new genus and species of carnivorous dinosaur from the Lower Cretaceous Kwanmon Group, northern Kyushu. Bulletin of the Kitakyushu Museum of Natural History 11:87-90
  3. ^ *Hasegawa, Y., Murata, M., Wasada, K. & Manabe M., 1992, "The First Carnosaur (Saurischia; Theropoda) from Japan: a Tooth from the Cenomanian Mifune Group of Kyushu", Science Reports of the Yokohama National University, 2(39): 41-49