Polymerichthys nagurai is an extinct, superficially eel-like alepisauroid from the Middle Miocene of Japan. The holotype specimen, no. 6599, was originally collected by Masayasu Nagura, a suzuri maker, around 1927. The specimen demonstrates several features typical of other families of Alepisauroidei, including head anatomy very similar to the daggertooths of Anotopteridae, and a well-developed dorsal fin similar to that of the lancetfish of Alepisauridae.[1]
The generic name literally translates as "many meristic fish," in reference to how the fish has numerous meristics units, including how the dorsal fin, which runs down the length of the body starting from behind the head, has somewhere between 300 and 350 rays, and how it has at least 186 vertebrae. The specific name honors the holotype's discoverer, Yuzo Nagura.[1]
See also
Other notable extinct Cenozoic aulopiforms include:
polymerichthys, nagurai, extinct, superficially, like, alepisauroid, from, middle, miocene, japan, holotype, specimen, 6599, originally, collected, masayasu, nagura, suzuri, maker, around, 1927, specimen, demonstrates, several, features, typical, other, famili. Polymerichthys nagurai is an extinct superficially eel like alepisauroid from the Middle Miocene of Japan The holotype specimen no 6599 was originally collected by Masayasu Nagura a suzuri maker around 1927 The specimen demonstrates several features typical of other families of Alepisauroidei including head anatomy very similar to the daggertooths of Anotopteridae and a well developed dorsal fin similar to that of the lancetfish of Alepisauridae 1 PolymerichthysTemporal range Middle MioceneComparison of Longnosed lancetfish and P naguraiScientific classificationKingdom AnimaliaPhylum ChordataClass ActinopterygiiOrder AulopiformesSuborder AlepisauroideiFamily PolymerichthyidaeGenus PolymerichthysSpecies P naguraiBinomial namePolymerichthys naguraiUyeno 1967 1 Etymology EditThe generic name literally translates as many meristic fish in reference to how the fish has numerous meristics units including how the dorsal fin which runs down the length of the body starting from behind the head has somewhere between 300 and 350 rays and how it has at least 186 vertebrae The specific name honors the holotype s discoverer Yuzo Nagura 1 See also EditOther notable extinct Cenozoic aulopiforms include Argillichthys a synodontid lizardfish from the Ypresian London Clay Alepisaurus paronai an extinct lancetfish that lived in middle Miocene PiemonteReferences Edit a b c Uyeno Teruya A Miocene alepisauroid fish of a new family Polymerichthyidae from Japan Bull Nat Sci Mus 10 1967 383 394 1 This Aulopiformes article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Polymerichthys amp oldid 1125320136, wikipedia, wiki, book, books, library,
