Ancyloceras matheronianum

Ancyloceras matheronianum
Temporal range: Lower Aptian
Ancyloceras matheronianum from France, on display at Galerie de paléontologie et d'anatomie comparée in Paris
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ammonitida
Family: Ancyloceratidae
Genus: Ancyloceras
Species: A. matheronianum
Binomial name
Ancyloceras matheronianum
Orbigny 1842

Ancyloceras matheronianum is an extinct species of heteromorph ammonite cephalopod belonging to the family Ancyloceratidae. It is the type species of the genus.

These fast-moving nektonic carnivores lived during the Cretaceous period, Lower Aptian age (from 125.45 to 122.46 Ma). [1][2] Fossils of this species are found in the marine strata of France, Russia and Morocco.

Description

Ancyloceras matheronianum ammonites have quite large shells, reaching a length of about 30–40 centimetres (12–16 in). They are heteromorph shaped, with a partly uncoiled shell and the aperture directed toward the coiled part.[3]

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