. Bulletin - United States National Museum. Science. Fig. 97.—Homoteypa similis. a, surface of a Minnesota specimen, X18, showing a MAcxn:,A and NEIGHBORING ZOCECIA; 6, TWO PORTIONS OF A TANGENTIAL SECTION, X18, PREPARED FROM AN AUTHENTIC Canadian example; c, vertical section, X18, of the same specimen, illustrating the charac- teristic GRADUAL OUTWARD BEND OF THE TUBES AND THE TABULATION. LOWEST BEDS OF THE TRENTON LIMESTONE, OTTAWA, CANADA, AND NEAR TRENTON FALLS, NeW YoRK. (AFTER UlRICH.) Acanthopores inconspicuous at the surface; mesopores absent save in the maculae. The views presented in
. Bulletin - United States National Museum. Science. Fig. 97.—Homoteypa similis. a, surface of a Minnesota specimen, X18, showing a MAcxn:,A and NEIGHBORING ZOCECIA; 6, TWO PORTIONS OF A TANGENTIAL SECTION, X18, PREPARED FROM AN AUTHENTIC Canadian example; c, vertical section, X18, of the same specimen, illustrating the charac- teristic GRADUAL OUTWARD BEND OF THE TUBES AND THE TABULATION. LOWEST BEDS OF THE TRENTON LIMESTONE, OTTAWA, CANADA, AND NEAR TRENTON FALLS, NeW YoRK. (AFTER UlRICH.) Acanthopores inconspicuous at the surface; mesopores absent save in the maculae. The views presented in tangential sections of both American and. Fig. 98.—Homoteypa similis. a, fragment of a branched zoarium, natueal size; 6, tangential section, x20, illustrating the structxire corresponding to the upper half of figure 97; 6, c, vertical section of same specimen, x20, showing identity with the internal structuee of American examples. "Wassalem beds (D3), Uxnoem, Esthonia. Russian specimens are shown in the accompanying illustrations. The marked peculiarities of the species are best seen in vertical sec- tions where the tubes are noted to bend outward very gradually. In the immature region the diaphragms are but shghtly curved;. 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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