''Skirroceras bayleanum'' is a Stephanoceratacean (ammonite) species belonging to the family
Stephanoceratidae
Stephanoceratidae is a family of planulate and coronate ammonites within the Stephanoceratoidea.Arkell, Kummel, and Wright, 1957. Mesozoic Ammonoidea; Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Shells are evolute so that all whorl ...
.
Skirroceras bayleanum at Bajocien14
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These fast-moving nektonic carnivores lived during the Jurassic
The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The J ...
period, in the Bajocian age.[Sepkoski, Jac]
Sepkoski's Online Genus Database – Cephalopoda
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Description
''Skirroceras bayleanum'' has a shell reaching about of diameter.
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Distribution
Fossils of ''Skirroceras bayleanum'' are found in the Middle Jurassic
The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The J ...
Bajocian age marine strata of United Kingdom and France.[
]
References
Geological Survey Professional Paper, Vol. 755-757
External links
MNHN
Jurassic ammonites
Stephanoceratoidea
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