Gleviceras

Gleviceras is an ammonite genus (order Ammonitida) that lived during the Early Jurassic Period, found in Canada, Hungary, Mexico and the United Kingdom.

Gleviceras
Temporal range: Sinemurian[1]
Fossil of Gleviceras guabalianum
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ammonitida
Superfamily:
Psiloceratoidea
Family:
Oxynoticeratidae
Genus:
Gleviceras

Buckman, 1918
Synonyms
  • Glevumites Buckman, 1924
  • Guibaliceras Buckman, 1918
  • Riparioceras Schindewolf, 1962
  • Tutchericeras Buckman, 1919
  • Victoriceras Buckman, 1918

Glevumites Buckman 1924, Guibaliceras Buckman 1918, Riparioceras Schindewolf 1962, Tutchericeras Buckman 1919, and Victoriceras Buckman 1918 are considered synonyms.

Description

Gleviceras produced laterally compressed involute shells with a small umbilicus, close spaced sinuous ribbing, and a sharp keel along venter. The suture in ammonitic with deep narrow complex lobes. It is similar to Oxynoticeras except for being less narrow and having a more rounded venter. Fastigiceras differs primarily in having an occluded umbilicus.

Taxonomy

Gleviceras was described by Buckman in 1918 and is included in the Family Oxynoticeratidae and superfamily Psiloceratoidea. Species include:

  • Gleviceras doris Reynes, 1879
  • Gleviceras guibalianum D'orbigny, 1844
  • Gleviceras iridescens Tutcher and Trueman, 1925
  • Gleviceras lotharingius Reynes, 1879
  • Gleviceras palomense Erben, 1956

Gleviceras is closely related to the genera Cheltonia, Hypoxynoticeras, Oxynoticeras, Paracymbites, Paroxynoticeras, Radstockiceras and Slatterites.

References
  1. Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Cephalopoda entry)". Bulletins of American Paleontology. 363: 1–560. Archived from the original on 2008-05-07. Retrieved 2017-10-18.
  • W.J. Arkell et al., 1957. Mesozoic Ammonoidea, Treatise on Invertebrate Paleontology, Part L, Geological Society of America and University of Kansas Press. (L240 -243)
  • Joachim Blau. et al. A new fossiliferous site of Lower Liassic (Upper Sinemurian) marine sediments from the southern Sierra Madre Oriental (Puebla, Mexico): Revista Mexicana de Ciencias Geológicas, v. 25, núm. 3, 2008, p. 402-407


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