A new percoid fish from the Eocene of Monte Bolca, Italy: Hendrixella grandei gen. & sp. nov. |
| |
| Authors: | Alexandre F Bannikov Giorgio Carnevale |
| |
| Institution: | (1) National Museum of Natural History, Smithsonian Institution, MRC-159, P.O. Box 37012, Washington, DC, 20013-7012, USA;(2) Natural History Department, Hessisches Landesmuseum Darmstadt, Friedensplatz 1, 64283 Darmstadt, Germany; |
| |
| Abstract: | A new genus and species of percoid fish, Hendrixella grandei gen. & sp. nov. is described from the upper Ypresian limestone of Monte Bolca, Italy. It is based on four well-preserved
specimens that show an elongate and slender body and a unique combination of features, including possession of 11 + 13 vertebrae,
two series of intermuscular bones, fused haemal spine of third preural centrum, caudal fin with 17 principal rays and 11 upper
and eight lower procurrent rays, predorsal formula 0/0/1 + 1/1/, two separated dorsal fins with rayless pterygiophore in-between,
and a single supernumerary spine in both dorsal and anal fins. Due to this unique combination of features, Hendrixella cannot be placed within any existing fossil or extant percoid families and it is placed incertae sedis in the Percoidei. The possession of two series of intermuscular bones represents an unambiguous autapomorphy of Hendrixella. A comparative analysis of the distribution of intermusculars among percomorph fishes indicates that the intermuscular bones
of the upper series can be homologized with the epineurals and those of the lower series are the homologs of the epicentrals
of non-acanthomorphs. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
