Early Devonian fishes from Utah : Heteroostraci earlydevonianfis117deni Year: 1953 344 FIELDIANA: GEOLOGY, VOLUME 11 Fig. 80. Protaspis ienuistnatus, sp. nov., type; PF 333, incomplete dorsal shield (XI). be slightly broader than in P. dorfi and narrower than in the P. amplus-perlatus-perryi group. The ornamentation is even finer than that of P. dorfi, with about 104 ridges per cm. in the midline, 116 per cm. laterally on the dorsal disc, and 106 per cm. on the midline of the rostrum. The form of the ridges is variable. The rostrum is longer and more broadly rounded anteriorly than in P.
Early Devonian fishes from Utah : Heteroostraci earlydevonianfis117deni Year: 1953 344 FIELDIANA: GEOLOGY, VOLUME 11 Fig. 80. Protaspis ienuistnatus, sp. nov., type; PF 333, incomplete dorsal shield (XI). be slightly broader than in P. dorfi and narrower than in the P. amplus-perlatus-perryi group. The ornamentation is even finer than that of P. dorfi, with about 104 ridges per cm. in the midline, 116 per cm. laterally on the dorsal disc, and 106 per cm. on the midline of the rostrum. The form of the ridges is variable. The rostrum is longer and more broadly rounded anteriorly than in P. dorfi, and shorter and narrower than the rostrum of a member of the P. amplus- perlatus-perryi group of comparable size. The branchial plates are very incompletely preserved, but are rather narrow, and meet the rostral plates anteriorly. The branchial opening is not preserved
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