Polyipnus sobnioviensis Jerzmanska, 1960
Deep-sea hachetfishKingdom: Animalia
Species: Polyipnus sobnioviensis
Author Citation Jerzmanska, 1960
Geological Time Scale
International Age: Rupelian
Menilite-Krosno Group of nappes
Acquired by: Purchase/Trade
The family of the deep-sea hatchetfish (Sternoptychinae) comprises three recent genera with a total of about 40 species and occurs worldwide in almost all tropical and temperate seas:
Argyropelecus with about 7 species,
Polyipnus with about 32 species and
Sternoptyx with currently 4 species.
The Sternoptychinae have a deep-bellied, laterally strongly flattened shape; the body shape reminds somewhat of a hatchet. The height of the recent species is between 3cm and 12cm. The body is covered with delicate silvery scales; in some species parts of the body are transparent.
Sternoptychidae can produce light with organs called photophores, of which they have between 3 and 7 – usually 6 – on the branchiostegal membrane along the lower edge of the chest and belly.
KOTLARCZYK, J.; JERZMAÑSKA, A.; OEWIDNICKA, E.; WISZNIOWSKA, T.(2006): A FRAMEWORK OF ICHTHYOFAUNAL ECOSTRATIGRAPHY OF THE OLIGOCENE-EARLY MIOCENE STRATA OF THE POLISH OUTER CARPATHIAN BASIN. Annales Societatis Geologorum Poloniae (2006), vol. 76: 1-111.