Biology:Skirroceras macrum

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Short description: Species of mollusc (fossil)


Skirroceras macrum
Temporal range: Jurassic (Bajocian), 171.6–167.7 Ma
[1]
Stephanoceratidae - Skirroceras macrum.jpg
Fossil of Skirroceras macrum from France, on display at the Museo Civico di Storia Naturale di Milano
Fossil
Scientific classification
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Stephanocerataceae
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S. macrum
Binomial name
Skirroceras macrum
(von Quenstedt)

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

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

Fossils of Skirroceras macrum are found in the Middle Jurassic Bajocian age marine strata of England and France.[3]

References

External links

Wikidata ☰ Q20716956 entry