. Bulletin - United States National Museum. Science. EAELY PALEOZOIC BKYOZOA OF THE BALTIC PROVINCES, 193 ules, as shown in figure 103 c, are more common. In this figure about half of the zooecia show cystiphragms cut by the section. The smooth branches inosculating so as to form a cribrose zoarium, and the internal features shown in the figure, are sufficient to separate this from similar small-stemmed species. The same species, differ- ing only in having less numerous diaphragms in the immature zone, occurs in the Black Kiver shales of Minnesota. Occurrence.—Common in the Wassalem beds (D3)
. Bulletin - United States National Museum. Science. EAELY PALEOZOIC BKYOZOA OF THE BALTIC PROVINCES, 193 ules, as shown in figure 103 c, are more common. In this figure about half of the zooecia show cystiphragms cut by the section. The smooth branches inosculating so as to form a cribrose zoarium, and the internal features shown in the figure, are sufficient to separate this from similar small-stemmed species. The same species, differ- ing only in having less numerous diaphragms in the immature zone, occurs in the Black Kiver shales of Minnesota. Occurrence.—Common in the Wassalem beds (D3) at Uxnorm, Esthonia; the same species, or at least a variety, is equally abundant d. 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
