Neslovicella elongata ŠTAMBERG , 2010

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 : 171

Neslovicella elongata ŠTAMBERG, 2010

Text-fig. 5 , fig. 2; Pl. 2, fig. 1

2010 Neslovicella elongata sp. nov.; Štamberg, p. 185, figs 2–13.

H o l o t y p e: Specimen MHK 80447 deposited in the Museum of Eastern Bohemia at Hradec Králové .

T y p e h o r i z o n a n d l o c a l i t y: Košťálov (“Behind the Tavern”); Rudník Horizon, Vrchlabí Formation, Asselian, Krkonoše Piedmont Basin.

O c c u r r e n c e: Košťálov (“Behind the Tavern”), Kundratice (“Doly”), Kundratice (“Gorge”), Semily (“Left Bank of Jizera River”), Rybnice (“Hrádecký Creek”) (Rudník Horizon, Vrchlabí Formation, Asselian, Krkonoše Piedmont Basin); Weissig near Dresden (Weissig Formation, Weissig Basin, Lower Permian).

D i a g n o s i s (after Štamberg 2010): Small aeduellid with elongate body, more slender than N. rzehaki , and not exceeding 75 mm in total length. Total body length 5 times the head length, and 5.1 times the maximum body height. Length of anal fin slightly shorter than length of dorsal fin. Base of anal and dorsal fins without field of small scales. Caudal peduncle long. Dorsal scaled lobe of caudal fin oriented at 20-25 degrees relative to body axis. Frontal/ parietal length ratio about 1.1. Orbit large. Small suborbital bones posterior to orbit. Length of maxilla 2.2 times its height. Very small axe-shaped preoperculum with vertically oriented anterior margin of its dorsal region. Operculum very high, equal to that of suboperculum. Operculumsuboperculum suture oblique. Two branchiostegal rays. One pair of lateral gular. Posterior margin of trunk scales conspicuously pectinate. Scale count as follows:

26

40

9 24 36

R e m a r k s: Neslovicella rzehaki is abundant, but entirely isolated in one locality of the Boskovice Graben. No other actinopterygian, acanthodian, xenacanthid or amphibian species accompany it, and its occurrence is bound to one small and time-limited lake. Small Neslovicella elongata occurs in several localities of the Krkonoše Piedmont basin, and it shared lake environments with paramblypterids that reached lengths up to 25 cm. Paramblypterids were present as a majority, but aeduellids occur in the same layer, and some samples show Paramblypterus rohani together with Neslovicella elongata . The two species, N. rzehaki from the Říčany Horizon of the Boskovice Graben and N. elongata from the Rudník Horizon of the Krkonoše Piedmont Basin, are very closely related. Their presence in both basins attests to an approximately equivalent age of the horizons. Neslovicella elongata was additionally recorded ( Štamberg 2010) in the Weissig Basin (Early Permian, Weissig Formation; Schneider et al. 2005) near Dresden, Germany. The Neslovicella elongata -bearing beds of the Weissig Formation and Rudník Horizon may be of identical age, and document the interconnection of the Krkonoše Piedmont Basin in the Bohemian Massif and the Weissig Basin in Germany through fluvial and lacustrine drainage systems linked to the Elbe lineament ( Schneider and Reichel 1989; Schneider and Zajíc 1994).

Figures

Text-fig. 5. Reconstruction of aeduellids from the Bohemian Massif. 1 – Spinarichthys dispersus (FRITSCH, 1895) (after Štamberg 1986). 2 – Neslovicella elongata ŠTAMBERG, 2010 (after Štamberg 2010). 3 – Neslovicella rzehaki ŠTAMBERG, 2007 (after Štamberg 2007). 4 – Bourbonnella hirsuta ŠTAMBERG, 2007 (after Štamberg, 2007). Scale bar represents 20 mm.