|
''Codazziceras'' is an early Upper Cretaceous ammonite from the upper Cretaceous of Columbia (S.A), distinguished from ''Lyelliceras'' (Lyelliceratidae) from which it is based and added to the Euomphaloceratinae (Acanthoceratidae). The type species is ''Lyelliceras scheibei''. The shell is rather evolute, ornamented with ribs and clavate tubercles. Ribs are fairly strong on the flanks but weaken as they cross the venter. Whorl section is compressed, moderately embracing, flanks convex, venter moderately flattened with three rows of tubercles that tend to be elongate in the direcion of coiling. ==References== * Pedro Pararroya, 2011. Sucesion de Amonites del Cretaceo Superior (Cenomaniano-Coniaciano) de la Parte Mas Alta de La Formacion Hondita y de la Formacion Loma Gorda en al Quebrada Bambuca, Aipe-Huila (Columbia, S.A.) English Abstract () Full text in Spanish *F. Etayo Serna, 1979. Zonation of the Cretaceous of central Colombia by ammonites. Publicaciones Geologicas Especiales del Ingeominas 2:1-188. " (''Codazziceras'' ) in Fossilworks/Paleobiology database, 26 Aug 2014. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Codazziceras」の詳細全文を読む スポンサード リンク
|