Helcionella

Helcionella Temporal range: Cambrian PreЄ Є O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
(unranked):	incertae sedis
Class:	†Helcionelloida
Order:	†Helcionelliformes
Family:	†Helcionellidae
Genus:	†Helcionella Grabau & Shimer, 1909
Species
H. bella Feng et al. H. emargina Cobbold, 1919 H. oblonga Cobbold, 1921 (Incomplete list, )

Helcionella is a genus of helcionellid, a fossil marine invertebrate animal that is considered to be a mollusk and may possibly be a gastropod. The shells of these animals are about a centimetre in size. The tip of the shell extends beyond the rear extremity of the shell's aperture, and the shell is "endogastric" in shape.^[1]

Helcionella is the type genus of the family Helcionellidae.

References

↑ Cobbold, E. S. (1919). "I.—Cambrian Hyolithidæ, etc., from Hartshill in the Nuneaton District, Warwickshire". Geological Magazine. 6: 149–158. doi:10.1017/S0016756800202483.

This article is issued from Wikipedia - version of the 9/10/2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.