Quitmaniceras

<i>Quitmaniceras</i>

Quitmaniceras

Genus of molluscs (fossil)

Quitmaniceras is a genus of small, compressed, fairly evolute ammonites from the lower Turonian of Grant County, New Mexico and Trans-Pecos Texas, included in the subfamily Acanthoceratinae. The shell has a carinate venter in juveniles and one that is arched in adults, usually with a raised siphonal line,(siphonal referring to the marginal siphuncle). Ribs are very weak to moderately strong, flexious, typically sloping forward toward the rim, bending further forward at the outer shoulder.

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Distribution

Fossils of Quitmaniceras have been found in Colombia (Loma Gorda Formation, Aipe, Huila),[1] Mexico and the United States (Arizona and Texas).[2]

References

  1. [1]
    Patarroyo, 2011, p.69
  2. [2]
    Quitmaniceras at Fossilworks.org

Bibliography

Further reading

  • W.A. Cobban, S.C. Hook & W.J.Kennedy, 1989. Upper Cretaceous rocks and ammonite faunas of southwestern New Mexico, Memoir 45, New Mexico Bureau of Mines & Mineral Resources


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