Muramotoceras

Muramotoceras Temporal range: Turonian–Santonian PreꞒ Ꞓ O S D C P T J K Pg N
Fossil of Muramotoceras from Upper Cretaceous of Japan
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	†Ammonoidea
Order:	†Ammonitida
Suborder:	†Ancyloceratina
Family:	†Nostoceratidae
Genus:	†Muramotoceras Matsumoto, 1967[1]

Muramotoceras was an unusual genus of heteromorphic ammonite.[2] It was known only from Japan until researchers reported in 2001 that the genus was present in Alaska's Matanuska Formation as well.[2] Its remains likely date to the middle Turonian (from 89.8 to 93.9 million years ago) in both areas.[2] Subsequently it was also described from the Santonian Gosau Group (Austria).[3]

See also

• List of ammonites

Footnotes

1. Matsumoto, T., 1967. Evolution of the Nostoceratidae (Cretaceous Hetermorph Ammonoids) Fac. Sci. Kyushu Univ. Mem. ser. D, geology 18 (2):331-347.
2. "Age of the Bone-Bearing Unit," Pasche and May (2001); page 220.
3. Summesberger, H.; Kennedy, W. J.; Skoumal, P. (2017). "Early and middle Santonian Cephalopods from the Gosau Group (Upper Cretaceous, Austria) 2. Heteromorph Ammonoidea" (PDF). Abhandlungen der Geologischen Bundesanstalt in Wien. 71: 101–149.

References

• Ann D. Pasch & Kevin C. May. (2001). "Taphonomy and paleoenvironment of a hadrosaur (Dinosauria) from the Matanuska Formation (Turonian) in South-Central Alaska". In Darren H. Tanke & Kenneth Carpenter (ed.). Mesozoic Vertebrate Life. Indiana University Press. pp. 219–236. ISBN 978-0-253-33907-2.

External links

• Paleotheque