. Bonner zoologische Monographien. Zoology. 126 part (crest of neural complex - Cavender & Coburn 1992) is deeply grooved. It is nar- row and relatively tall in P. phoxinus, erythro< gast er, brachyurus, neogaeus, and in the out- groups (TS 176[0]): it is broad and relatively short in other species (TS 176[1]). In P. phoxinus and eos, the grooved portion of the supraneural is narrower (TS 177[ 1 ]) than that in other species of Phoxinus and in the outgroups (TS 177[0]). In P. neogaeus, the anterior portion of the dorsal margin of the supraneural is not grooved (TS 178[ 1]). In other spe
. Bonner zoologische Monographien. Zoology. 126 part (crest of neural complex - Cavender & Coburn 1992) is deeply grooved. It is nar- row and relatively tall in P. phoxinus, erythro< gast er, brachyurus, neogaeus, and in the out- groups (TS 176[0]): it is broad and relatively short in other species (TS 176[1]). In P. phoxinus and eos, the grooved portion of the supraneural is narrower (TS 177[ 1 ]) than that in other species of Phoxinus and in the outgroups (TS 177[0]). In P. neogaeus, the anterior portion of the dorsal margin of the supraneural is not grooved (TS 178[ 1]). In other species of Phoxinus and in the outgroups. its entire dorsal margin is grooved (TS The claustrum (, 79A-E) is located at the anterodorsal side of centrum 1. It co- vers the atrium sinus impar ventromedially, and the anterior portion of scaphium poste- riorly. It is roughly triangular on lateral view, and no variation with phylogenetic significance was observed in Phoxinus. The scaphium (Figs 77A-C, 79A-E) is located posteriorly to the claustrum. Coburn (1982) divided the scaphium into four parts: a cup at mesial, a posterodorsally directed spine, a ventromedial articulating process, and a blunt tubercle posteriorly off the lateral surface of the cup. Intraspecific variation is present in the morphology of different parts of the bone in Phoxinus. For instance, in some specimens of P. phoxinus, a notch is present on the margin of the cup: the notch is absent in other specimens of the same species; the po- sterodorsal spine is sharp in some specimens, it is blunt in other specimens of the same species. The intercalarium (Figs 77A-C. 79A-E. 80B) is a roughly T-shaped bone and placed at the posterior to the scaphium anteriorly and anterior to the tripus. Via ligaments, the in- tercalarium connects with scaphium and tripus posteriorly. The intercalarium can be divi- ded into three parts, a dorsolateral process, a dorsomedial process, and a main part. Generally, the dorsomedial p
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