. Annual report of the Regents. New York State Museum; Science. Fig. 154. 3Ionotrypella cequalis surface, xl8, Fia. 155. Transverse section of same, xl8. j Fig. 156. Vertical section, xl8. 1890.) Petalotrtpa, Ulrich. (Geol. Sur. Ill, Yol. YIII, p. 377. Type, Petalotrypa compressa, Ulrich. Zoarium bifoliate, consisting of irregular compressed branches or simple fronds; celluliferous on both sides; cell tubes prismatic, arising from a strongly flexuous mesotheca; apertures polygonal. This genus may be distinguished from the other forms of this family by its bifoliate mode of growth, and the pres
. Annual report of the Regents. New York State Museum; Science. Fig. 154. 3Ionotrypella cequalis surface, xl8, Fia. 155. Transverse section of same, xl8. j Fig. 156. Vertical section, xl8. 1890.) Petalotrtpa, Ulrich. (Geol. Sur. Ill, Yol. YIII, p. 377. Type, Petalotrypa compressa, Ulrich. Zoarium bifoliate, consisting of irregular compressed branches or simple fronds; celluliferous on both sides; cell tubes prismatic, arising from a strongly flexuous mesotheca; apertures polygonal. This genus may be distinguished from the other forms of this family by its bifoliate mode of growth, and the presence of a 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 New York State Museum; University of the State of New York. Board of Regents. Albany : J. B. Lyon, State Printer
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Keywords: ., bookauthorne, bookcentury1800, bookdecade1880, booksubjectscience
