Bourbonnella HEYLER, 1967

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 : 169

Genus Bourbonnella HEYLER, 1967

T y p e s p e c i e s: Bourbonnella guilloti HEYLER, 1967 . I n c l u d e d s p e c i e s: Several species from the Carboniferous and Permian sediments of French Massif Central, Switzerland, New Mexico and Utah ( USA). Only the species Bourbonnella hirsuta ŠTAMBERG, 2007 is known from the Bohemian Massif.

D i a g n o s i s: (after Poplin 2001, Poplin and Dutheil 2005, emended Štamberg 2007): Aeduellid from 15 to 30 cm in total length. The total length ranges from 3.5 to 5.5 times length of the head. Average scale count is

25-29

42-44

7-12 24-27 33-40

One infraorbital is long and narrow, sometimes with a second considerably shorter one bordering the orbit posterodorsally. The rostral region composes the supraorbital anterior beside the postrostral and nasal on some species. The supraorbital canal terminates with a „pit line“ on the dermopterotic or dermosphenotic. Posterior region of maxilla is higher than on other Aeduellidae , and dorsal border is concave. Very high and unequal operculum and suboperculum, with a rectilinear common suture. Operculum only slightly inclined anteriorly. Three to six large ridge scales occur in front of the dorsal fin. Scaled lobes form bases of pectoral fins. Vertical row of scales in front of the origin of the dorsal fin contains from 22 to 31 scales.