Collignoniceratidae

	Collignoniceratidae Collignoniceratidae is a family of Upper Cretaceous ammonites characterized by typically more or less evolute shells with compressed, oval, or square whorl sections; serrate or entire keels; and dense ribs with one to 5 tubercles. Taxonomy This family, named by Wright and Wright in 1951, is divided into four subfamilies; Collignoniceratinae, Barroisiceratinae, Peroniceratinae, and Texanitinae. The family is included in the large ammonitid superfamily Acanthoceratoidea which lasted until the end of the Cretaceous. The Collignoniceratidae are derived from the Acanthoceratidae, first appearing early in the Turonian (early U Cret) and lasting until the mid Campanian (late U Cret), a span of some 20 million years Collignoniceratidae Wright & Wright, 1951 (synonyms - Prionocyclidae Breistroffer, 1947; Prionotropidae Zittel, 1865) Subfamily Barroisiceratinae Basse, 1947 Genus ''Barroisiceras'' de Grossouvre, 1894 Genus ''Forresteria'' (Reeside, 1932) Genus '' Solgerites'' Re ... [...More Info...] [...Related Items...] OR:* [Wikipedia] [Google] [Baidu]
	Cibolaites The genus ''Cibolaites'' is a strongly ribbed and nodose ammonoid cephalopod from the middle Cretaceous of western New Mexico, included in the taxonomic family Collignoniceratidae. A single species ''Cibolaites molenaari'' is known. Description ''Cibolaites'' is a moderate-sized, somewhat involute genus, with a moderate umbilicus, that bears broad rounded ribs on the flanks which bifurcate from the umbilical shoulder on larger specimens. Whorl section is broadest though the umbilical shoulders, flanks converge moderately on a broadly rounded venter. which bears three rows of distinct, commonly elongate, nodes. (Plate 2, figs 1–9, Cobban and Hook, 1983). The suture is ammonitic but relatively simple with generally rounded, cauliform, elements. (Fig 14, p. 17, Cobban and Hook, 1983). ''Cibolaites'' is similar to the Coniacian '' Barroisiceras'' which differ in having smaller umbilici and crenulate keels. History and classification ''Cibolaites'' was discovered in lower Turo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Barroisiceras ''Barroisiceras'' is an acanthoceratacean ammonite from the Upper Cretaceous, Coniacian, included in the family Collignoniceratidae. Diagnosis The shell of ''Barroisiceras'' is rather involute, coiled such that the outer whorl embraces much of the previous, and is generally compressed. Whorls are high with a strong crenulate keel and sparse umbilical tubercles that develop into pairs of commonly flat ribs. Taxonomy ''Barroisiceras'' is divided two subgenera, ''Barroisiceras (Barroisiceras)'' and ''Barroisiceras (Texasia)'',with '' Alstadenites'' sometimes added as a third, ''Barroisiceras (Alstadenites)''. ''B. (Barroiciceras)'' is moderately involute and the suture is rather simple. ''B. (Texasia)'' is more evolute and has a distinctly eccentric umbilicus and more complex suture. Distribution Cretaceous of Austria, Czechoslovakia, France, Hungary, Italy, Japan, Morocco, Slovakia, Spain, Trinidad and Tobago and USSR References ;Notes ;Bibliography * Arkell ''et al.'', 1957. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Peroniceras ''Peroniceras'' is an ammonite (an extinct group of marine mollusc) belonging to the Ammonitida family Collignoniceratidae. Species of this genus were widespread throughout the world. They were fast-moving nektonic carnivore shelled ammonoid Ammonoids are a group of extinct marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs, commonly referred to as ammonites, are more closely related to living coleoids (i.e., octopuses, squid and cuttlefish) ...s. Distribution Cretaceous of Antarctica, Cameroon, Canada (British Columbia), Denmark, France, India, Mexico, Nigeria, South Africa, United States (California), Venezuela ; Jurassic of Japan References Further reading * John Bernard ReesidThe cephalopods of the Eagle sandstone and related formations Ammonitida genera Collignoniceratidae Cretaceous ammonites Ammonites of Africa Cretaceous Africa Ammonites of Asia Jurassic Asia Ammonites of Europe Cretaceous Europe Ammonit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Yabeiceras ''Yabeiceras'' is an extinct genus of cephalopods belonging to the ammonite family Collignoniceratidae.Paleobiology Database ''Yabeiceras'' entry Accessed 2 December 2011 They flourished during the Coniacian age Age or AGE may refer to: Time and its effects * Age, the amount of time someone or something has been alive or has existed ** East Asian age reckoning, an Asian system of marking age starting at 1 * Ageing or aging, the process of becoming older ... , and lived in [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Forresteria ''Forresteria'' is an extinct genus of cephalopod belonging to the subclass Ammonoidea. They flourished during the late Turonian and early Coniacian of the Late Cretaceous,Cobban, William A. ''et al'' (2006) "A USGS Zonal Table for the Upper Cretaceous Middle Cenomanian-Maastrichtian of the Western Interior of the United States Based on Ammonites, Inoceramids, and Radiometric AgesUSGS (Open-File Report 2006–1250) and were global in extent. ''Forresteria alluaudi'' and ''Forresteria hobsoni'' are considered marker fossils for the lower Coniacian in the American West. Description Although the whorl section and ornament of ''Forresteria'' are variable, it is easily distinguished from ''Barroisiceras ''Barroisiceras'' is an acanthoceratacean ammonite from the Upper Cretaceous, Coniacian, included in the family Collignoniceratidae. Diagnosis The shell of ''Barroisiceras'' is rather involute, coiled such that the outer whorl embraces much of ...'' by the presence of mid-late ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Collignoniceras ''Collignociceras'' is a strongly ribbed and tuberculate, evolute ammonite from the Turonian of the western U.S. and Europe belonging to the ammonitid family Collignoniceratidae. The genus is named after the French paleontologist Maurice Collignon. The type is ''Collignoniceras woollgari'', named by Mantell in 1822 for specimens from Sussex, England. The shell is compressed in early growth stages, with rounded or high and clavate siphonal tubercles tending to form a serrate keel, straight or slightly sinuous ribs and weak umbilical and strong ventrolateral tubercles. later whorls tend to be squarer in section with exaggerated ventrolateral tubercles. Two subspecies are known from the Turonian of western North America, ''C. woollgari wooolgari'' and ''C. woollgari regulari''. ''C. w. woollgari'' has been found with '' Mammites depressus'' at the top of the lower shale tongue and lowermost overlying Tres Hermanos sandstone member of the Mancos Shale in New Mexico, in a shale bed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Acanthoceratoidea Acanthoceratoidea, formerly Acanthocerataceae, is a superfamily of Upper Cretaceous ammonoid cephalopods belonging to the order Ammonitida, and comprising some 10 or so families.W.J Arkell ''et al''., Mesozoic Ammonoidea; Treatise on Invertebrate Paleontology, Part L, Ammonoidea. 1957 Diagnosis Members of the Acanthoceratoidea are typically strongly ribbed and have a tendency to develop prominent tubercles, although other types including those with oxyconic shells are included. Taxonomy Families included in the Acanthoceratoidea are: * Acanthoceratidae * Brancoceratidae * Coilopoceratidae * Collignoniceratidae * Flickiidae * Lyelliceratidae Lyelliceratidae is a family of ammonites belonging to the superfamily Acanthoceratoidea. These cephalopods were fast-moving nektonic carnivores. They lived in the Cretaceous period (109.0 to 94.3 Ma). Genera ''Lyelliceras'' Spath, 1921 '' Ps ... * Sphenodiscidae * Tissotiidae * Vascoceratidae Discussion According to Wright Call ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Bevahites ''Bevahites'' is a Cretaceous ammonite with an evolute, ribbed, tuberculate, and keeled shell with a squarish to compressed whorl section. ''Bevahites'' is a member of the collignoniceratid subfamily Texanitinae as well as of the Acanthoceratoidea and has been found in Upper Santonian to middle Campanian The Campanian is the fifth of six ages of the Late Cretaceous Epoch on the geologic timescale of the International Commission on Stratigraphy (ICS). In chronostratigraphy, it is the fifth of six stages in the Upper Cretaceous Series. Campani ... sediments in southern Africa and Madagascar. '' Barrisioceras'', '' Menabites'', and '' Parabevahites'' are among related genera. References ;Notes ;Bibliography Arkell, et al., 1957. Mesozoic Ammonoidea; Treatise on Invertebrate Paleontology, Part L. Geological Society of America and University of Kansas Press. Cretaceous ammonites Cretaceous animals of Africa Santonian genus first appearances Campanian genus extincti ... [...More Info...] [...Related Items...] OR:* [Wikipedia] [Google] [Baidu]