Osteology ofEubiodectes libanicus(Pictet & Humbert, ) and some other ichthyodectiformes (Teleostei): phylogenetic implications

摘要: The osteology of the ichthyodectiform Eubiodectes libanicus (Pictet & Humbert, 1866) from Cenomanian Lebanon is described on basis acid-prepared specimens. For comparative purposes, other putative ichthyodectiforms or discussed. We focus description hitherto poorly species such as Chiromystus mawsoni Cope, 1885, Ghrisichthys bardacki (Cavin, 1997a), ‘Saurodon' intermedius (Newton, 1878) and Thrissops sp. Kimmeridge, England. Sixty-nine morphological characters are defined analysed to infer phylogenetic relationships within ichthyodectiforms. main results are: (1) exclusion Ascalabothrissops Pachythrissops ichthyodectiforms; (2) redesignation ‘Ichthyodectes' bardacki, Turonian Morocco, gen. nov.; (3) resolution a monophyletic family Cladocyclidae grouping mid-Cretaceous that lived mainly along southern margin Tethys (Chirocentrites, Cladocyclus, Eubiode...