Reineckeia

Reineckeia is an extinct genus of ammonoid cephalopods belonging to the family Reineckeiidae.^[2]

Reineckeia Temporal range: Middle Jurassic, 164.7–145.5 Ma PreꞒ Ꞓ O S D C P T J K Pg N [1]
Fossil shell of Reineckeia anceps from Poitou (France), on display at Galerie de paléontologie et d'anatomie comparée in Paris
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Order:	Ammonitida
Family:	Reineckeiidae
Genus:	Reineckeia Bayle 1818

These fast-moving nektonic carnivores lived during the Middle Jurassic period, from the Bathonian age to the Callovian age.^[3]

Description

Shells of Reineckeia species can reach a diameter of about 38 centimetres (15 in).

Distribution

Fossils of species within this genus have been found in the Middle Jurassic Calabozo and Los Molles Formations of Argentina, Chile,^{[citation needed]} France, the Berching Formation of Germany, Portugal,^{[citation needed]} Chari Formation of India, Madagascar, Switzerland and United States^{[citation needed]}.^[4]