Quitmaniceras

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Quitmaniceras
Temporal range: Late Cretaceous (early Turonian)
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Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ammonitida
Family: Acanthoceratidae
Subfamily: Acanthoceratinae
Genus: Quitmaniceras
Powell, 1963
Species
  • See text

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.

Contents

Distribution

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

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<i>Allocrioceras</i> Genus of molluscs (fossil)

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Ankinatsytes is an extinct genus of cephalopod belonging to the Ammonite subclass. The ammonite is from the Late Cretaceous of Colombia and Venezuela.

Benueites is an extinct ammonoid cephalopod genus from the Late Cretaceous (Turonian), named by Revment, 1954, included in the family Acanthoceratidae, superfamily Acanthoceratoidea.

<span class="mw-page-title-main">Aipe</span> Municipality and town in Huila Department, Colombia

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Wrightoceras is an extinct genus of cephalopod, belonging to the Ammonite subclass, that lived during the Turonian epoch of the Late Cretaceous.

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Morrowites, named by Cobban and Hook, 1983, is a moderate to large-sized ammonite with quadrangular to depressed whorls, broadly rounded to depressed venter, low ribs, umbilical and inner and outer ventrolateral tubercles and smooth early whorls except for occasional ribs along weak constrictions. The suture is moderately simple and has an unusually broad bifid first lateral lobe. It is so far restricted to the Lower Turonian stage, in the mid Cretaceous.

<i>Mammites</i> Genus of molluscs (fossil)

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<i>Fagesia</i> Genus of molluscs (fossil)

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<span class="mw-page-title-main">La Frontera Formation</span> Geological formation

The La Frontera Formation (Spanish: Formación La Frontera, K2F, Ksf) is a geological formation, part of the Villeta Group, of the Altiplano Cundiboyacense and neighbouring areas of the Eastern Ranges of the Colombian Andes. The sequence of limestones and lydites dates to the Late Cretaceous period; Turonian epoch and has a maximum thickness of 206 metres (676 ft).

<span class="mw-page-title-main">Loma Gorda Formation</span> Geological formation in the Colombian Andes

The Loma Gorda Formation is a fossiliferous geological formation of the Upper Magdalena Valley (VSM) and surrounding Central and Eastern Ranges of the Colombian Andes, extending from Cundinamarca in the north to Huila and easternmost Tolima in the south. The uppermost unit of the Güagüaquí Group, a sequence of laminated siltstones and shales, dates to the Late Cretaceous period; Turonian to Coniacian epochs, and has a maximum thickness of 167 metres (548 ft).

<span class="mw-page-title-main">Hondita Formation</span>

The Hondita Formation is a fossiliferous geological formation of the Upper Magdalena Valley (VSM) and surrounding Central and Eastern Ranges of the Colombian Andes, extending from Cundinamarca in the north to Huila and easternmost Tolima in the south. The lowermost unit of the Güagüaquí Group, a sequence of sandy limestones and shales, dates to the Late Cretaceous period; Turonian epoch, and has a maximum thickness of 90 metres (300 ft).

<span class="mw-page-title-main">Oliní Group</span> Fossiliferous geological group

The Oliní Group (Spanish: Grupo Oliní, K3k5o, K2ol, Kso) is a fossiliferous geological group of the VMM, VSM and the eastern flanks of the Central and western flanks of the Eastern Ranges of the Colombian Andes. The regional group stretches from north to south across approximately 700 kilometres (430 mi) and dates to the Late Cretaceous period; Coniacian, Santonian and Campanian epochs, and has a maximum thickness of 287 metres (942 ft). Fossils of Eonatator coellensis have been found in the unit, near Coello, Tolima.

<i>Bachea</i> Extinct genus of fishes

Bachea is an extinct genus of ray-finned fish that lived during the Late Cretaceous in what is now central Colombia, South America. The type species is Bachea huilensis, described in 1997 by María Páramo from the Turonian of Huila, Colombia.

References

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

Bibliography

Further reading