. Bulletin - United States National Museum. Science. EARLY PALEOZOIC BEYOZOA OP THE BALTIC PROVHsTCES. 239 DIANULITES COLLIFERA, new species. Text fig. 134. The internal structure of this species is quite similar to that of Dianulites petropolitana. Externally there is no difficulty in sepa- rating the low hemispheric zoarium of the present form with its nodulated surface (fig. 134 a and h) from the smooth, dome-shaped. Fig. 134.—Dianulites colufera. a Airo b, side aitd front views op the type-specimen, natural size; c, surface, X9, "with distinct granules along the "walls; d, the us
. Bulletin - United States National Museum. Science. EARLY PALEOZOIC BEYOZOA OP THE BALTIC PROVHsTCES. 239 DIANULITES COLLIFERA, new species. Text fig. 134. The internal structure of this species is quite similar to that of Dianulites petropolitana. Externally there is no difficulty in sepa- rating the low hemispheric zoarium of the present form with its nodulated surface (fig. 134 a and h) from the smooth, dome-shaped. Fig. 134.—Dianulites colufera. a Airo b, side aitd front views op the type-specimen, natural size; c, surface, X9, "with distinct granules along the "walls; d, the usual aspect presented IN tangential sections, X20; e, vertical section of several tubes, X20; /, a zocecium, x35, in a TANGENTIAL SECTION WITH THE CHARACTERISTIC WALL STRUCTURE. LTCKHOLM LIMESTONE (Fl), KERTEL, ISLAND OF DAGO. masses of the former. The zooecia of D. coUifera are thin walled, and show the characteristic granules of Dianulites exceptionally well, both at the surface and in thin sections. Five zooecia occur m 3 mm.; mesopores usually few but sometimes numerous enough to average one to a zoo3cium. True acanthopores wanting. Tabulae at iatervals varying from one and a half to two tube diameters Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
Size: 1500px × 1666px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
