Jobu Formation

The Jobu Formation is a Cretaceous geologic formation of Late Cenomanian age. Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus. The oldest confirmed tyrannosaurid premaxillary tooth was recovered from the Jobu Formation.^[1] The mammal Sorlestes is also known from the formation.

Jobu Formation
Stratigraphic range: late Cenomanian ~96–94 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Unit of	Mifune Group
Lithology
Primary	Mudstone
Location
Coordinates	32.7°N 130.9°E / 32.7; 130.9
Approximate paleocoordinates	44.4°N 123.5°E / 44.4; 123.5
Region	Fukui, Kumamoto
Country	Japan
Jobu Formation (Japan)

Fossil content

The following fossils were reported from the formation:^[2]

• Mammals
  • Sorlestes mifunensis^[3]
• Dinosaurs
  • Carnosauria indet. (=Allosaurus sp.?)^[4]
  • Ceratopsia indet.^[4]
  • Tetanurae indet.^[5]
  • Theropoda indet.^[6]
  • Tyrannosauridae indet.^[7]
• Pterosaurs
  • Azhdarchidae indet.^[8]
• Turtles
  • Adocus sp.^[9]
  • Shachemys sp.^[9]
  • Nanhsiungchelyidae indet.^[10]

See also

• List of dinosaur-bearing rock formations
  • List of stratigraphic units with indeterminate dinosaur fossils