. College collection of palaeontology. No. 495. [1164. Cast]. Brachio- spongia digitata, Oweu. This large and remarkable fossil sponge, with eleven beautifully radiat- ing and recurved hollow branches, is from the Lower Silurian, Franklin Count}^ Ky. According to Mr. Beecher the num- ber of branches or arms in this species vary from 8 to 12, and the specimens range in size from 3^ to 11 inches in diameter. Size of thit, specimen, 11 x 11. No. 496. [1165, Cast]. Coeloptychium agaricoides, Coklf. These mushroom-like Sponges liave the upper surface marked by pores in trans- verse lines, and the l
. College collection of palaeontology. No. 495. [1164. Cast]. Brachio- spongia digitata, Oweu. This large and remarkable fossil sponge, with eleven beautifully radiat- ing and recurved hollow branches, is from the Lower Silurian, Franklin Count}^ Ky. According to Mr. Beecher the num- ber of branches or arms in this species vary from 8 to 12, and the specimens range in size from 3^ to 11 inches in diameter. Size of thit, specimen, 11 x 11. No. 496. [1165, Cast]. Coeloptychium agaricoides, Coklf. These mushroom-like Sponges liave the upper surface marked by pores in trans- verse lines, and the lower one rayed. From the Chalk, Haldem, Westphalia, and now in the Ward Collection of the University of Rochester. No. 497. Cryptozoon protiferum, Hall. This sponge was long known as Stromotopora rugosa, and was assigned to the Calciferous Epoch, instead of the Potsdam as at present. Saratoga, N. Y. No. 498. Dictyophyton nodosuni, Hall. Chemung Group, Bath, Steuben County, New York. No. 499. Dictyophyton tuberosum, Hall. This interesting sponge was formerly supposed to be a plant, as the name signifies. It is the internal cast of a sponge which had a network somewhat like the living Euplectella. The genus is known by eight or ten species. In the present species (as also in D. nodosum) the body expands at intervals, and is protruded into tubercles or nodes, with a longitudinal axis and moderate elevation. From the Chemung Group (Upper De- vonian), of Steuben County, N. Y. Size, 7 x No. 500. [1168, Cast]. Polypothecia dichotoma, [Benett. This genus is allied to ScypMa. The species presents considerable diversity of shape. This beautiful speci- men shows several branches springing from one root. Upon breaking these stems transversely, sections of parallel longitudinal tubes are exhibited as in Siphonia. From the Upper Greensand, Warminster, England. Size, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readab
Size: 2074px × 1205px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1900, bookyear1901
