Echioceras

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Echioceras
Temporal range: Sinemurian, [1] 196.5– 189.6 Ma
[2]
Echioceratidae - Echioceras raricostatum.JPG
Fossil shells of Echioceras raricostatum from Pierreclos (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: Echioceratidae
Genus: Echioceras
Bayle, 1878

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

Selected species[edit]

  • Echioceras raricostatum
  • Echioceras fastigiatum

Description[edit]

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[edit]

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

References[edit]

  1. ^ Sepkoski, Jack (2002). "Sepkoski's Online Genus Database". Retrieved 2014-05-28. 
  2. ^ a b Echioceras in Paleobiology Database
  • Cyril Walker & David Ward (1993) - Fossielen: Sesam Natuur Handboeken, Bosch & Keuning, Baarn. ISBN 90-246-4924-2

External links[edit]