Carpathichthys polonicus, Krępak hill, Oligocene: holotype, ZPAL Wr A/2004, right side

 

 

Diagnoza

Long head with short posterior part of neurocranium; maxilla forms the greater part of upper jaw; mandible shallow; jaws with small, uniform teeth arranged in single rows; opercular bones thin with smooth margins; preoperculum and interoperculum large; operculum long, shallow and triangular; ceratohyal imperforate with narrow midportion; pelvics inserted slightly behind midpoint of body; dorsal and anal fins, posteriorly placed, subequal and opposite; about 41 vertebrae, 20 caudal; majority of head bones, cleithrum and vertebral centra of adult forms with numerous low ridges and furrows; scales absent; pectoral and caudal fin without produced ray.

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Small, slender fishes with delicate skeleton. Large head whose length fits 2,8 times in standard length. The bones of the skull were not heavily fused, since they are often found disarticulated. Standard length of the largest complete specimen is 68 mm. From the fragments of other skeletons I assume that the length of the remaining specimens ranges from 30 to 100 mm.

Porównanie

Autekologia

marine

Występowanie geograficzne

Only locus typicus.

Zasięg czasowy

Only stratum typicum.

Materiały muzealne

2 complete (ZPALWr A/2004-2005), 5 almost complete (ZPALWr Al2006-2010) and 20 incomplete specimens (ZPALWr Al2011-2014; 2017-2024; 2041-2048)- Zoological Institute of Wroclaw University, Poland.

Literatura

Jerzmańska, A. 1979. Oligocene alepocephaloid fishes from the polish Carpathians. Acta Palaentologica Polonica 24(1): 65 - 76.