Report on paleontology . 3ELEMNITID/E OF THE LOWER BED GREENSAND MARLS PLATE XLVIII. EXPLANATION OP PLATE XLVIII. Nautilus Cookana Whitf. (p. 285). Pig. 1. View of a large specimen which has been obliquely compressed. A portion of the coll has been removed to show the inner volution, cast of the umbilicus, etc. The wood-cut out-line on page 286 is of the opposite side of this U. S. GEOLOGICAL SURVE. NAUI iLlD/E OF THE EOCENE LAYERS OF THE UPPER BED GREENSAND MARLS. PLATE XLTX. EXPLANATION OF PLATE XLIX. Atcrta Vanuxemi Conrad (p. 287). Figs. 1. Profile view showing the inside of a
Report on paleontology . 3ELEMNITID/E OF THE LOWER BED GREENSAND MARLS PLATE XLVIII. EXPLANATION OP PLATE XLVIII. Nautilus Cookana Whitf. (p. 285). Pig. 1. View of a large specimen which has been obliquely compressed. A portion of the coll has been removed to show the inner volution, cast of the umbilicus, etc. The wood-cut out-line on page 286 is of the opposite side of this U. S. GEOLOGICAL SURVE. NAUI iLlD/E OF THE EOCENE LAYERS OF THE UPPER BED GREENSAND MARLS. PLATE XLTX. EXPLANATION OF PLATE XLIX. Atcrta Vanuxemi Conrad (p. 287). Figs. 1. Profile view showing the inside of a septum, the two sinuses formed by the spire, and thebroad funnel-formed siphon. 2. View of the side of a small individual broken so as to show the inner volution, the filling of the large siphon and the junction of some of the septa with it. 3. View of the filling of a single chamber as obtained from a gutta-percha impression in the onter cup of the specimen figured on PI. L. Tlie cast straightened somewhat, givingless arcuatiou, but greater length of the ventral portion than should be. The partmarked o represents the funnel-formed siphonal depression of the septum. Nautilus Cookana Whitf. (p. 285). 4,5. Dorsal and lateral views of a young specimen of the species, somewhat compressed dorso-ventrally, showing the distant septa and filling of the umbilical cavity. Am. Mus. Collection. 396 U. 5
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Keywords: ., bookcentury1800, bookdecade1880, bookpub, booksubjectpaleontology
