. The Devonian crinoids of the State of New York. Crinoidea, Fossil; Paleontology; Paleontology. DEVONIAN CRINOIDS OF NEW YORK 87 incorporated up to and including the first secundibrachs. Arms uniserial and column round. This genus is very similar to Dimerocrinus, but the latter has biserial arms whereas this genus has uniserial arms throughout. Genotype. Pterinocrinus quinquenodus Distribution. Upper Devonian (lower Chemung) of New oSo^ Pterinocrinus quinquenodus sp. nov. Plate 1, figures 3-10; text figure 34 This species is represented only by sharp moulds in sandstone. The descriptio
. The Devonian crinoids of the State of New York. Crinoidea, Fossil; Paleontology; Paleontology. DEVONIAN CRINOIDS OF NEW YORK 87 incorporated up to and including the first secundibrachs. Arms uniserial and column round. This genus is very similar to Dimerocrinus, but the latter has biserial arms whereas this genus has uniserial arms throughout. Genotype. Pterinocrinus quinquenodus Distribution. Upper Devonian (lower Chemung) of New oSo^ Pterinocrinus quinquenodus sp. nov. Plate 1, figures 3-10; text figure 34 This species is represented only by sharp moulds in sandstone. The description is based upon gutta-percha squeezes made from these moulds. Crown with a graceful feathery appearance due to the long pinnules. The length of the crown at maturity can not be given, since the specimens in which the arms are preserved to any extent are all young. Dorsal cup broadly obconical, higher than wide, broadest at or just below the primaxil, and constricted at the arm bases. Infrabasals five, small, penta- gonal; so small they are concealed by the prominent nodes on the basals. They are shown quite clearly in the natural moulds. Basals of about the same height and width and hexa- gonal, except the posterior one which is heptagonal, being truncated above for the reception of the first anal plate. The radials are the largest plates of the cup, heptagonal, usually wider than high. Primibrachs two, smaller than the radials and the second smaller than the first. First primibrach hexagonal; the second, the primaxil, heptagonal. First secundibrachs incorporated in the cup. Above this point the arms are 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 Goldring, Winifred, 1888-1971. Albany : University of the State of New York
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectpaleont, bookyear1923
