Echioceras

Genus of molluscs (fossil) From Wikipedia, the free encyclopedia

Echioceras is an extinct genus of ammonites from the Early Jurassic of Europe and North America.

Phylum:Mollusca
Class:Cephalopoda
Subclass:†Ammonoidea
Order:†Ammonitida
Quick facts Scientific classification, Species ...
Echioceras
Temporal range: Sinemurian,[1] 196.5–189.6 Ma [2]
Fossil shells of Echioceras raricostatum from Pierreclos (France), on display at Galerie de paléontologie et d'anatomie comparée in Paris
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: †Ammonoidea
Order: †Ammonitida
Family: †Echioceratidae
Genus: †Echioceras
Bayle, 1878
Species
  • Echioceras delicatum Buckman, 1914
  • Echioceras intermedium Trueman and Williams, 1925
  • Echioceras raricostatum Zieten, 1831
Close

Description

Shell of Echioceras species can reach a diameter of about 4–6 centimetres (1.6–2.4 in).. The narrow and broad evolute shell is reinforced by fine ribs on inner whorls, progressively becoming stronger, straight and distinct.

Distribution

Fossils of species within this genus have been found in the Jurassic rocks of Canada, Hong Kong, Turkey and United Kingdom,[2] Carpathians[3] and Alps.

References

Related Articles

Wikiwand AI