Skirroceras macrum
| Skirroceras macrum | |
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| Fossil of Skirroceras macrum from France, on display at the Museo Civico di Storia Naturale di Milano | |
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| Species: | S. macrum
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| Binomial name | |
| Skirroceras macrum (von Quenstedt)
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Skirroceras macrum is a Stephanoceratacean (ammonite) species belonging to the family Stephanoceratidae.
These fast-moving nektonic carnivores lived during the Jurassic period, in the Bajocian age.[2]
Description
[edit]Skirroceras macrum has an evolute shell reaching about 11.5 centimetres (4.5 in) of diameter. These ammonites are heavily ribbed, with characteristic nodes.
Distribution
[edit]Fossils of Skirroceras macrum are found in the Middle Jurassic Bajocian age marine strata of England and France.[3]
References
[edit]- P. E. BARTOK, O. RENZ and G.E.G. WESTERMANN The Siquisique ophiolites, Northern Lara State, Venezuela: A discussion on their Middle Jurassic ammonites and tectonic implications
External links
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