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desmoceratidae : ウィキペディア英語版 | desmoceratidae
Desmoceratidae is a family belonging to the ammonite subclass.〔 with and (1996), ''Mollusca 4 Revised , Cretaceous Ammonoidea'', vol. 4, in ''Treatise on Invertebrate Paleontology'', Part L (Roger L. Kaesler et el. eds.), Boulder, Colorado: The Geological Society of America & Lawrence, Kansas: University of Kansas Press, 69-71.〕 〔 (Desmoceratidae ) at (Paleobiology database ), retrieved on July 8, 2012.〕 They are an extinct group of ammonoids, shelled cephalopods related to squid, belemnites, octopuses, and cuttlefish, and more distantly to the nautiloids, that lived between the Lower Cretaceous (Upper Valanginian) and Upper Cretaceous (Upper Maastrichtian). ==References==
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