{{Short description|Genus of molluscs (fossil)}} {{Automatic taxobox |fossil_range = {{fossilrange|85.8|66}} |image = Anapachydiscus wittekindi.JPG |image_caption = ''Anapachydiscus wittekindi'' |taxon = Anapachydiscus |authority = Yabe & Shimizu, 1926 }}
'''''Anapachydiscus''''' is an extinct cephalopod genus from the Upper Cretaceous, Santonian - Maastrichtian of Europe, Africa, Madagascar, S.India, N Z, Calif. Mexico, Argentina, and the Antarctic belonging to the ammonoid family Pachydiscidae.
''Anapachydiscus'' has a rather involute shell with a broad to moderately compressed whorl section. Early whorls smooth, intermediary develop straight or slightly curved, radial ribs that thicken toward the umbilicus. Outer whorls may again be smooth, or have coarse ribs so as to resemble ''Eupachydiscus''.
==References== *Treatise on invertebrate Paleontology, Part L, Mollusca 4. Mesozoic Ammonoidea. Geological Society of America and Univ. Kansas Press (1957) *[https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=14553 ''Anapachydiscus''-Paleodb] 5/02/11
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Category:Late Cretaceous ammonites of North America Category:Coniacian genus first appearances Category:Maastrichtian genus extinctions Category:Desmoceratoidea Category:Ammonitida genera
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