. Bulletin - United States National Museum. Science. EARLY PALEOZOIC BRYOZOA OP THE BALTIC PROVINCES. 175 Family FENESTELLIDiE King. But a single species of this prolific group of post-Ordovician Paleo- zoic Bryozoa has been recorded from the Russian strata under study. This is a species of the genus Fenestella which Eichwald has recorded from the dolomitic limestone at Borkholm. In America the corre- sponding strata have also afforded a single representative of the same genus. Genus FENESTELLA Lonsdale. Fenestella Lonsdale, Murchison's Silurian System, 1839, p. 677.—Eichwald, Leth^a Rossica,
. Bulletin - United States National Museum. Science. EARLY PALEOZOIC BRYOZOA OP THE BALTIC PROVINCES. 175 Family FENESTELLIDiE King. But a single species of this prolific group of post-Ordovician Paleo- zoic Bryozoa has been recorded from the Russian strata under study. This is a species of the genus Fenestella which Eichwald has recorded from the dolomitic limestone at Borkholm. In America the corre- sponding strata have also afforded a single representative of the same genus. Genus FENESTELLA Lonsdale. Fenestella Lonsdale, Murchison's Silurian System, 1839, p. 677.—Eichwald, Leth^a Rossica, vol. 1, 1860, p. 356.—Shrubsole, Quart. Journ. Geol. Soc. London, vol. 37, 1881, p. 179.—Ulrich, Journ. Cincianati Soc. Nat. Hist., vol. 5, 1882, p. 150.—Hall and Simpson, Nat. Hist. New York, Pal., vol. 6, 1887, p. xxii.—Ulrich, Geol. Surv. Illinois, vol. 8, 1890, pp. 395, 534.— PocTA, Syst. Sil. Centre Boheme, vol. 8, pt. 1, 1894, p. 40.—Ulrich, Zittel's Textbook Paleontology (Eng. ed.), 1896, p. 281.—Simpson, Fourteenth Ann. Rep. State Geologist of New York, for the year 1894,1897, p. 500.—NiCKLES and Bas- SLER, Bull. 173, U. S. Geol. Surv., 1900, pp. 37, 244.— CoNDRA, Nebraska Geol. Surv., vol. 2, pt. 1, 1903, p. 49.—Hennig, Archiv fur - Zool., K. Sven. Stockholm, vol. 3, No. 10, 1906, p. 1. Fenestrella (error) D'Orbigny, Prodr. de Pal., vol. 1, 1850, p. 44. Actinostroma Young and Young, Quart. Journ. Geol. Soc. Lon- don, vol. 30, 1874, p. 681.— Vine, Proc. Yorkshire Geol. Polyt. Soc, vol. 9,1885, p. 84. Flabelliporina Simpson, Thir- teenth Ann. Rep. State Geol. New York for the year 1893, 1895, pp. 703, 724; Forty-seventh Ann. Rep. New York State Mus., 1895, pp. 897, 918; Fourteenth Ann. Rep. State Geologist New York for the year 1894, 1897, p. 521. Zoarium flabellate or funnel shaped, celluliferous on the inner side; branches generally straight, sometimes flexuous, connected at regular intervals by dissepiments; apertures in two rows, se
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