''Polyosteorhynchus'' is an extinct

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...

coelacanth The coelacanths ( ) are fish belonging to the order Actinistia that includes two extant species in the genus '' Latimeria'': the West Indian Ocean coelacanth (''Latimeria chalumnae''), primarily found near the Comoro Islands off the east c ...

lobe-finned fish Sarcopterygii (; ) — sometimes considered synonymous with Crossopterygii () — is a taxon (traditionally a class or subclass) of the bony fishes known as the lobe-finned fishes. The group Tetrapoda, a mostly terrestrial superclass includi ...

which lived during the Carboniferous

period Period may refer to: Common uses * Era, a length or span of time * Full stop (or period), a punctuation mark Arts, entertainment, and media * Period (music), a concept in musical composition * Periodic sentence (or rhetorical period), a concept ...

(

Serpukhovian The Serpukhovian is in the ICS geologic timescale the uppermost stage or youngest age of the Mississippian, the lower subsystem of the Carboniferous. The Serpukhovian age lasted from Ma to Ma. It is preceded by the Visean and is followed b ...

stage Stage or stages may refer to: Acting * Stage (theatre), a space for the performance of theatrical productions * Theatre, a branch of the performing arts, often referred to as "the stage" * ''The Stage'', a weekly British theatre newspaper * Sta ...

, about 318 - 326

million years ago The abbreviation Myr, "million years", is a unit of a quantity of (i.e. ) years, or 31.556926 teraseconds. Usage Myr (million years) is in common use in fields such as Earth science and cosmology. Myr is also used with Mya (million years ago). ...

). The size of ''Polyosteorhynchus'' was about 3,5 – 19 cm long.

Species of Polyosteorhynchus

*''

Polyosteorhynchus simplex ''Polyosteorhynchus'' is an extinct genus of coelacanth lobe-finned fish which lived during the Carboniferous period ( Serpukhovian stage, about 318 - 326 million years ago). The size of ''Polyosteorhynchus'' was about 3,5 – 19 cm l ...

'' Lund and Lund, 1984

External links

Polyosteorhynchus at Palaeos
Hadronectoridae Prehistoric lobe-finned fish genera Carboniferous bony fish Mississippian fish of North America {{paleo-lobefinned-fish-stub