. Bulletin - United States National Museum. Science. 278 BULLETIN 77, UNITED STATES NATIONAL MUSEUM. In the size of its zooBcia alone this species is so decidedly' different from other ramose Trepostomata that comparisons are unnecessary. The specific name is in honor of the late Dr. August von Mickwitz, who collected the type-specimens. Occurrence.—Common in tiie Wassalem beds (D3) at Uxnorm, Esthonia. Cotypes.—€ait. No. 57380, Thin sections of the type-specimens and two specimens from the type locality are in the collections of the British Museum. BATOSTOMA WINCHELLI (Ulrich). Text
. Bulletin - United States National Museum. Science. 278 BULLETIN 77, UNITED STATES NATIONAL MUSEUM. In the size of its zooBcia alone this species is so decidedly' different from other ramose Trepostomata that comparisons are unnecessary. The specific name is in honor of the late Dr. August von Mickwitz, who collected the type-specimens. Occurrence.—Common in tiie Wassalem beds (D3) at Uxnorm, Esthonia. Cotypes.—€ait. No. 57380, Thin sections of the type-specimens and two specimens from the type locality are in the collections of the British Museum. BATOSTOMA WINCHELLI (Ulrich). Text fig. 166. Amplexopora xoinchelli Ulrich, Fourteentli Ann. Rep. Geol. Nat. Hist. Surv. Minnesota, 1886, p. 91. Batostoma winchelli Ulrich, Geol. and Nat. Hist. Surv. Minnesota, vol. 3, pt. 1, 1893, p. 295, pi. 26, figs. 33-37; pi. 27, figs. 1-6.—Simpson, Fourteenth Ann. Rep. State Geologist of New York for the year 1894, 1897, p. 588, fig. Fig. 166.—Batostoma -wtnchelli. a and b, two fragments op natueal size; c, sueface of a, X9 AND XlS; d, TANGENTIAL SECTION, X18, SHOWING CHARACTER OF A MATURE EXAMPLE; e, SMALL POR- TION OF A TANGENTIAL SECTION OF A YOUNG SPECIMEN, X18; /, SEVERAL ZOCECIA OF FIGURE d, X50; g, VERTICAL SECTION, X18, OF AN ORDINARY SPECIMEN. BLACK RlVER (DECORAH) SHALE, St. PAUL, Minnesota. (After Ulrich.) The Russian specimens referred to this abundant American species show external and internal features so similar to those figured below that the illustrations of the American form will serve for both, following are the essential characters of the species: 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
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