| Muramotoceras Temporal range: Turonian–Santonian PreꞒ Ꞓ O S D C P T J K Pg N | |
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| Fossil of Muramotoceras from Upper Cretaceous of Japan | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | †Ammonoidea |
| Order: | †Ammonitida |
| Suborder: | †Ancyloceratina |
| Family: | †Nostoceratidae |
| Genus: | †Muramotoceras Matsumoto, 1967 |
Muramotoceras was an unusual genus of heteromorphic ammonite. It was known only from Japan until researchers reported in 2001 that the genus was present in Alaska's Matanuska Formation as well. Its remains likely date to the middle Turonian (from 89.8 to 93.9 million years ago) in both areas. Subsequently it was also described from the Santonian Gosau Group (Austria).
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.
- ^ "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
| Taxon identifiers | |
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| Muramotoceras | |
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