Aeduellidae ROMER , 1945

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 : 168

Family Aeduellidae ROMER, 1945

T y p e g e n u s: Aeduella WESTOLL, 1937 .

Included genera from the Bohemian M a s s i f: Bourbonnella HEYLER, 1967 ; Spinarichthys ŠTAMBERG, 1986 ; Neslovicella ŠTAMBERG, 2007 .

D i a g n o s i s (after Poplin 200l, emended Štamberg 2007). Palaeonisciforms with fusiform or elevated-fusiform body. The total body length is approximately 3 to 4 times the height of the body in front of the dorsal fin. Head is rather large. Orbit is large. Large medial rostro-postrostral is ornamented with tubercles. Large nasal is ornamented with distinctive longitudinal ridges. The supraorbital anterior with conspicuous sculpture is only present in some species, and in this case the nasal is without ornamentation. Only a few large sensory lines and pores are present. Supraorbital sensory canal passes along the lateral margin of the frontal, and traverses onto dermopterotic in the form of a “pit line” or a canal interconnected with the infraorbital canal. The “medial pit line” and “posterior pit line” are developed on the parietal only. The infraorbitals are either all small or a few (one or two) may be large. The premaxillary is absent. The maxillaries are in contact medially oroventrally from the rostro-postrostral, with an elevated postorbital region. The teeth along the oral margin are minuscule, numerous and in several ranges, and carry small tubules rooted on the bone. The preoperculum is vertical, and divided into an inferior plate with horizontal and vertical “pit lines,” and into numerous small bones superiorly. The operculum is large with nearly vertical axis. The suboperculum is the same or nearly the same height as the operculum. There are one or a small number of branchiostegal rays. Median gular plate is elongated, with two “pit lines” in V or Y forms. The lateral gular plate has one “pit line”. The scales are smooth. The series of large ridge scales in front of the dorsal fin does not continue to the head. Ridge scales are not developed between the dorsal and caudal fins. One anal plate is present. The dorsal and anal fins begin on the same or nearly the same scale row. The lepidotrichia are numerous; they divide distally from the basal article to very short articles that usually have a sigmoid mutual connection. The basal article is long. The caudal fin is distinctively heterocercal with inversion of the scale rows.