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| regnum = Animalia | phylum = Chordata | subphylum = Vertebrata | infraphylum = Gnathostomata | superclassis = Osteichthyes | classis = | subclassis = | ordo = Pycnodontiformes | superfamilia = | familia = Coccodontidae | subfamilia = | genus = ''Hensodon'' | species = ''H. spinosus'' | binomial = ''Hensodon spinosus'' | binomial_authority = }} ''Hensodon spinosus'' is an extinct pycnodontid that lived during the Upper Cenomanian of what is now Lebanon.〔 ''H. spinosus'' superficially resembled a marine angelfish with a massive head, and a very spiny pectoral girdle. Different specimens have different arrangements of the horn-like frontal spines. One form has the horns arranged as a double-prong, assumed to be the male, and the other form, assumed to be the female, having the horns one after the other, like those of a rhinoceros. Before they were separated into different (albeit, closely related) families, ''H. spinosus'' was considered the sister taxon of ''Trewavasia'', within Coccodontidae. However, since the removal of ''Trewavasia'' and ''Ichthyoceros'' from Coccodontidae to form Trewavasiidae, the superficially chimaera-like ''Coccodus'' is ''H. spinosus closest relative. ==See also== * Prehistoric fish * List of prehistoric bony fish * ''Trewavasia'', once thought to be its sister genus * ''Coccodus'', currently regarded as its sister genus 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「Hensodon」の詳細全文を読む スポンサード リンク
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