Hildoceras

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Hildoceras
Temporal range: Toarcian–Aalenian[1]
Hildoceras spp.jpg
Hildoceras sp.
Scientific classification e
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ammonitida
Family: Hildoceratidae
Subfamily: Hildoceratinae
Genus: Hildoceras
Hyatt, 1876
Species

Hildoceras is a genus of ammonite form the Jurassic[1] in the family Hildoceratidae. The shells are characterized by a narrow discoidal evolute shape, keeled venter, concave ribs along the outer flanks, and a shallow spiral goove running along smooth inner flanks. Whorls slightly overlap, cross sections are compressed. The ventral keel is bordered on either side by a shallow groove.

Recreation of Hildoceras

The genus was named by Alpheus Hyatt after Saint Hilda in 1876, and fossils have been found in Europe and Japan.

Distribution[edit]

Jurassic of Bulgaria, France, Germany, Hungary, Italy, Japan, Luxembourg, Serbia and Montenegro, Spain, the United Kingdom[2]

References[edit]

Notes
  1. ^ a b Sepkoski, Jack (2002). "Sepkoski's Online Genus Database". Retrieved 2014-05-28. 
  2. ^ "Paleobiology Database - Hildoceras". Retrieved 2014-05-28. 
Bibliography
  • Arkell, W.J.; Kummel, B.; Wright, C.W. (1957). Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Lawrence, Kansas: Geological Society of America and University of Kansas Press.