Muramotoceras
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]
| Muramotoceras | |
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| Fossil of Muramotoceras from Upper Cretaceous of Japan | |
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| Genus: | Muramotoceras Matsumoto, 1967[1] |
See also
- List of ammonites
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.
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. 219β236. ISBN 978-0-253-33907-2.
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