Skirroceras macrum

Skirroceras macrum is a Stephanoceratacean species belonging to the family Stephanoceratidae.
These fast-moving nektonic carnivores lived during the Jurassic period, in the Bajocian age.

Description

Skirroceras macrum has an evolute shell reaching about 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.