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Anagaudryceras : ウィキペディア英語版 | Anagaudryceras
''Anagaudryceras'' is an extinct genus of ammonite from the later Cretaceous belonging to the Ammonoidea family Gaudryceratidae. ''Anagaudryceras'' has a moderately involute shell with a deep umbilicus and strongly ribbed outer whorl. Ribs are thick and rounded and cross over the venter uninterrupted. ==References==
* * Wani, R. 2007. Differential preservation of the Upper Cretaceous ammonoid ''Anagaudryceras limatum'' with corrugated shell in central Hokkaido, Japan. Acta Palaeontologica Polonica 52 (1) 2007 () * (The Paleobiology Datase ''Anagaudriceras'' entry ) accessed 5 April 2012
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