Paramblypterus SAUVAGE, 1888

Štamberg, Stanislav, 2013, Knowledge Of The Carboniferous And Permian Actinopterygian Fishes Of The Bohemian Massif - 100 Years After Antonín Frič, Acta Musei Nationalis Pragae Series B 69 (3 - 4), pp. 159-182 : 172

Genus Paramblypterus SAUVAGE, 1888

D i a g n o s i s (emended after Dietze 2000): Nasal split up secondarily. Dermohyal not present as a single ossification. More than two suborbitals. Seven to nine branchiostegal rays. Gap between opercular series and skull roofing bones absent. Duplication of the extrascapular series (postparietals) present. Scales serrated weakly, with little ornamentation.

I n c l u d e d s p e c i e s from the Bohemian Massif: Paramblypterus rohani ( HECKEL, 1861) ; Paramblypterus reussii ( HECKEL, 1861) , Paramblypterus vratislaviensis ( AGASSIZ, 1833) ; Paramblypterus kablikae ( GEINITZ, 1860) ; Paramblypterus feistmanteli FRITSCH, 1895 ; Paramblypterus zeidleri FRITSCH, 1895 . Very close to P. rohani is P. duvernoy ( AGASSIZ, 1833) from the Saar-Nahe Basin ( Dietze 1999, 2000).

R e m a r k s: Genera Amblypterus AGASSIZ, 1833 and Paramblypterus SAUVAGE, 1888 are very close. The following important anatomical features are common to both genera ( Štamberg 2013b): Shape of the upper jaw with the maxillary plate; type of the dentition on the jaws formed by tubular teeth; presence of the supraorbital anterior in the nasal region; configuration of the skull roof; configuration of the cheek including suborbital bones, preoperculum, inclination of the suspensorium; configuration of the opercular apparatus.

The following characters discriminate between Amblypterus and Paramblypterus ( Dietze 2000, Štamberg 2014): Only one dermohyal present on Amblypterus , more dermohyals on Paramblypterus ; scales of Paramblypterus carry fine mounds on their outer surface, and posterior margin of the scales is denticulated, whereas the scales of Amblypterus are smooth with concentric growth striae, and the posterior margin of the scales is not denticulated; Dvalues (see Dietze 2000) of scales are lower in Amblypterus (1.2) than in Paramblypterus (between 1.4 and 2.0); large paired and unpaired fins on Amblypterus . The fins on Paramblypterus ( P. decorus , P. duvernoy ) are smaller in the relation to the size of the body.

Species of the genus Paramblypterus are most common in the Early Permian of the Krkonoše Piedmont Basin, Intra-Sudetic Basin and in the Boskovice Graben.