Orthoceras

== Translingual == === Etymology === From Ancient Greek ὀρθός (orthós, “straight”) + κέρας (kéras, “horn”). === Proper noun === Orthoceras n A taxonomic genus within the family †Orthoceratidae – formerly including many extinct nautiloid cephalopods with straight shells,now only †Orthoceras regulare. A taxonomic genus within the family Orchidaceae. ==== Hypernyms ==== (genus in †Orthoceratidae): Eukaryota – superkingdom; Animalia – kingdom; Bilateria – subkingdom; Protostomia – infrakingdom; Spiralia – superphylum; Mollusca – phylum; Cephalopoda – class; Nautiloidea – subclass; †Orthocerida – order (genus in Orchidaceae): Eukaryota – superkingdom; Plantae – kingdom; Viridiplantae – subkingdom; Streptophyta – infrakingdom; Embryophyta – superphylum; Tracheophyta – phylum; Spermatophytina – subphylum; angiosperms, monocots – clades; Asparagales – order; Orchidaceae – family; Orchidoideae – subfamily; Diurideae – tribe; Diuridinae – subtribe ==== Hyponyms ==== (genus in †Orthoceratidae): †Orthoceras strictum – sole accepted species (genus in Orchidaceae): Orthoceras strictum – type species; Orthoceras novae-zeelandiae – other species === References === extinct cephalopod Orthoceras on Wikipedia.Wikipedia Orthocerida on Wikispecies.Wikispecies Category:Orthoceras regulare on Wikimedia Commons.Wikimedia Commons orchid Orthoceras (plant) on Wikipedia.Wikipedia Orthoceras (Orchidaceae) on Wikispecies.Wikispecies Orthoceras (Orchidaceae) on Wikimedia Commons.Wikimedia Commons