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Binneyitidae is a family of Upper Cretaceous ammonoid cephalopods characterized by rather small, compressed, flat sided shells and sutures that tend to have deep, narrow, simple elements with parallel sides, that range from the upper Cenomanian into the lower Santonian. Three genera are included, as follows. :''Borrisjakoceras'' Arkangelski 1916. Shells moderately evolute to rather involute, venter bluntly trapezoidal to rounded. Stratigraphic range: U Cenomanian - L Turonian. Found in Kansas, Montana, and Turkmenistan. :''Binneyites'' Reeside 1917. Shells very involute, venter flat. Ventrolateral ornament stronger than on ''Borrisjakoceras''. First found in the Coniacean of Wyoming. Range known from middle Turronian to the lower Santonian. :''Johnsonites'' Cobban 1961. Type and only known, ''Johsonites sulcatus'' Cobban. Binneyitidae, according to C.W. Wright, et al. 1996, is now regarded as belonging to the Haploceratoidea. Originally the Binneyitidae was included in the Acanthoceratoidea based on the possibility of descent from a compressed acanthoceratid such as ''Protacanthoceras''. ==References== *W.A. Cobban, The ammonite family Binneyitidae Reeside in the Western Interior of the United States, Abstract () *C.W. Wright, et al. 1996. Treatise on Invertebrate Paleontology (Revised ) L(4). ( Fossilworks Binneyitidae ) 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「Binneyitidae」の詳細全文を読む スポンサード リンク
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