. Bulletin - United States National Museum. Science. I i. Fig. 24.—Cceloclema crassimubale. a, fragment of a zoarium, natural size, with end view of THE SAME SHOWING THE CENTRAL TUBE; 6, TANGENTIAL SECTION, X20, EXHIBITING THE THICKNESS OF WALLS, OBSCURE LUNABIUM, AND SMALL, IRREGULAR MESOPORES; C, VERTICAL SECTION, X20, THROUGH ONE SIDE OF A ZOARIUM. JEWE LIMESTONE (Dl), BARON TOLL'S ESTATE, ESTHONIA. have unusually thick walls. The lunarium is inconspicuous both at the surface and in thin sections. Although closely related to the typical forms of the genus, O. crassi- murale proves upon comp
. Bulletin - United States National Museum. Science. I i. Fig. 24.—Cceloclema crassimubale. a, fragment of a zoarium, natural size, with end view of THE SAME SHOWING THE CENTRAL TUBE; 6, TANGENTIAL SECTION, X20, EXHIBITING THE THICKNESS OF WALLS, OBSCURE LUNABIUM, AND SMALL, IRREGULAR MESOPORES; C, VERTICAL SECTION, X20, THROUGH ONE SIDE OF A ZOARIUM. JEWE LIMESTONE (Dl), BARON TOLL'S ESTATE, ESTHONIA. have unusually thick walls. The lunarium is inconspicuous both at the surface and in thin sections. Although closely related to the typical forms of the genus, O. crassi- murale proves upon comparison to have larger zooecia and thicker walls than any described form. None of the associated bryozoans has a central tube, and this fact alone will aid in its determination. Occurrence.—Rare in the Jewe limestone (Dl), Baron Toll's estate. Specimens which are believed to represent the parasitic base of this species have been found in the Jewe limestone associated with the type-specimen, and also in the Wassalem beds (D3), at Uxnorm. At the latter locality no specimens of the erect, hollow stems have been noted. Holotype.—Cat. No. 57195, British Museum's collections, thin section of the 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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