. Bulletin - United States National Museum. Science. EAELY PALEOZOIC BEYOZOA OF THE BALTIC PROVINCES. 217 STIGMATELLA CLAVIFORMIS (Ulrich). Text fig. 119. Leptotrypa claviformis Ulrich, Geol. and Nat. Hist. Surv. Minnesota, vol. 3, pt. 1, 1893, p. 319, pi. 27, figa. 20, 21. Among the small, massive bryozoans of the Wassalem beds are rather numerous examples with a club-shaped zoarium which agrees externally with the above common American form. This identifica- tion is confirmed by thin sections which show practically no variation in specimens from the two widely separated localities. Figures o
. Bulletin - United States National Museum. Science. EAELY PALEOZOIC BEYOZOA OF THE BALTIC PROVINCES. 217 STIGMATELLA CLAVIFORMIS (Ulrich). Text fig. 119. Leptotrypa claviformis Ulrich, Geol. and Nat. Hist. Surv. Minnesota, vol. 3, pt. 1, 1893, p. 319, pi. 27, figa. 20, 21. Among the small, massive bryozoans of the Wassalem beds are rather numerous examples with a club-shaped zoarium which agrees externally with the above common American form. This identifica- tion is confirmed by thin sections which show practically no variation in specimens from the two widely separated localities. Figures of the American examples are given below. The following remarks are adapted from Ulrich's description. Zoarium growing into simple club-shaped forms varying from the smallest figured to one that is 23 mm. long and to mm. in. 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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