. Catalog of fossil fishes in the Carnegie Museum. Fishes, Fossil. CATALOG OF THE FOSSIL FISHES IN THE CARNEGIE MUSEUM. 395 "Portions of the fin-membrane or shagreen-covering of the pectoral pair, as well as the greater part of the pelvic, anal, and caudal fins are preserved. The anal is nearly opposite the posterior dorsal, and except for being more sharply pointed, resembles it in form and proportions. The pelvic pair is decidedly acumi- nate, and placed midway between the anal and pectoral pair. The pelvics slightly exceed the second dorsal in size, which latter is somewhat higher and
. Catalog of fossil fishes in the Carnegie Museum. Fishes, Fossil. CATALOG OF THE FOSSIL FISHES IN THE CARNEGIE MUSEUM. 395 "Portions of the fin-membrane or shagreen-covering of the pectoral pair, as well as the greater part of the pelvic, anal, and caudal fins are preserved. The anal is nearly opposite the posterior dorsal, and except for being more sharply pointed, resembles it in form and proportions. The pelvic pair is decidedly acumi- nate, and placed midway between the anal and pectoral pair. The pelvics slightly exceed the second dorsal in size, which latter is somewhat higher and longer than the first dorsal; and the depth [width] of the pectorals is about one third greater than that of the pelvic pair. Nearly the entire front margin of the right pectoral fin is preserved, but the distal portion of the left pectoral is either concealed or broken away. The same is true of the terminal part of both lobes of the ;^ The general outline of body and position of all the fins is shown in Plate LVII, fig. 1. The shaded area immediately behind the head and thoracic region indi- cates a fracture in the containing rock. The configuration of the head is well shown by a continuous mass of calcified cartilage and closely crowded shagreen granules preserved in natural position. Teeth are not visible, the head being exposed from the dorsal aspect without indi- cations of mouth-parts. Two forwardly placed openings are probably to be interpreted as nasal and orbital respectively. Fine shagreen granules bearing each a single acuminate recurved spine occur in regular series everywhere over the surface of the bodj^ and cover the fin-membranes as well. Just above the vertebral column and evidently indicating the median. <.%y x-^^^^ s b Fig. 1. Surface view of the dermal denticles of Scyllium sp. (From Bridge after Klaatsch, Cambridge Natural History, Vol. on Fishes, p. 184, fig. 99.) b, basal plate; c, canal which perforates basal plate and becomes the axial pu
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfishesfossil, bookyea
