. Bulletin - United States National Museum. Science. EARLY PALEOZOIC BRYOZOA OP THE BALTIC PEOVIlSrCES. 139 62 a and c, while the surface characters of the former are shown in figure 62 &. The zoarium grows from a spreading attached space into narrow, bifohate branches with thin, sharp, nonporiferous edges. Wlien magnified the celluhferous side in the very regular arrange- ment of the zooecia and sculpture of the interspaces presents a highly ornamental appearance. The apertures are elliptical and separated from each other by spaces equal to their shorter diameter. Around each aperture is
. Bulletin - United States National Museum. Science. EARLY PALEOZOIC BRYOZOA OP THE BALTIC PEOVIlSrCES. 139 62 a and c, while the surface characters of the former are shown in figure 62 &. The zoarium grows from a spreading attached space into narrow, bifohate branches with thin, sharp, nonporiferous edges. Wlien magnified the celluhferous side in the very regular arrange- ment of the zooecia and sculpture of the interspaces presents a highly ornamental appearance. The apertures are elliptical and separated from each other by spaces equal to their shorter diameter. Around each aperture is a well-defined peristome, and between the longitudi- nal rows of zooecia a flexuous, thread-like line is developed. These peristomes and longitudinal lines bear a row of minute papillae, wliich increase the ornament of the surface. Five to five and one-half zooecia in 2 mm., measuring lengthmse, and seven rows in 2 mm., coimting 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.
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
