Muramotoceras Temporal range: | |
---|---|
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
Footnotes
- ↑ Matsumoto, T., 1967. Evolution of the Nostoceratidae (Cretaceous Hetermorph Ammonoids) Fac. Sci. Kyushu Univ. Mem. ser. D, geology 18 (2):331-347.
- 1 2 3 "Age of the Bone-Bearing Unit," Pasche and May (2001); page 220.
- ↑ 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
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