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Barremites
''Barremites'' is an Ammonoidea, ammonoid cephalopod genus belonging to the family Desmoceratidae, that lived during the Hauterivian and Barremian stages of the Early Cretaceous. Description Its shell is moderately to very involute, with the outer whorl strongly embracing the inner whorls, and variably compressed. Sides are generally smooth and marked with sinuous or falcate collars marking intervals of growth and bearing feeble striae to moderately distinguished ribs. with and (1996), ''Mollusca 4 Revised , Cretaceous Ammonoidea'', vol. 4, in ''Treatise on Invertebrate Paleontology'', Part L (Roger L. Kaesler ed.), Boulder, Colorado: The Geological Society of America & Lawrence, Kansas: University of Kansas Press, at 69-70. Two subgenera have been defined; ''Barremites (Raspailiceras)'' which is moderately involute with a well rounded whorl section and sloping umbilical walls, from the Hauterivian and Barremian, and ''Barremites (Barremites)'' which is very involute, c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barremites Difficilis (d'Orbigny), Barremian, Mala Koutlovitsa (Montana) At The SUMPHG
''Barremites'' is an Ammonoidea, ammonoid cephalopod genus belonging to the family Desmoceratidae, that lived during the Hauterivian and Barremian stages of the Early Cretaceous. Description Its shell is moderately to very involute, with the outer whorl strongly embracing the inner whorls, and variably compressed. Sides are generally smooth and marked with sinuous or falcate collars marking intervals of growth and bearing feeble striae to moderately distinguished ribs. with and (1996), ''Mollusca 4 Revised , Cretaceous Ammonoidea'', vol. 4, in ''Treatise on Invertebrate Paleontology'', Part L (Roger L. Kaesler ed.), Boulder, Colorado: The Geological Society of America & Lawrence, Kansas: University of Kansas Press, at 69-70. Two subgenera have been defined; ''Barremites (Raspailiceras)'' which is moderately involute with a well rounded whorl section and sloping umbilical walls, from the Hauterivian and Barremian, and ''Barremites (Barremites)'' which is very involute, c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |