. Bulletin - New York State Museum. Science. NIAGARA FALLS AND VICINITY 151 Found in the Rochester shale at Niagara, Lockport and other places. Often very abundant. At Niagara it has been found as low as 4 feet above the Clinton limestone, and from that upward as far as the Bryozoa beds, in which it occurs in moderate abun- dance. It has not been found above these beds. It occurs chiefly in the calcareous layers of the shale, from which it weathers out, the nut-like calyxes rolling to the bottom of the section where they can be picked up by the side of the railroad track.^ Genus callocystites
. Bulletin - New York State Museum. Science. NIAGARA FALLS AND VICINITY 151 Found in the Rochester shale at Niagara, Lockport and other places. Often very abundant. At Niagara it has been found as low as 4 feet above the Clinton limestone, and from that upward as far as the Bryozoa beds, in which it occurs in moderate abun- dance. It has not been found above these beds. It occurs chiefly in the calcareous layers of the shale, from which it weathers out, the nut-like calyxes rolling to the bottom of the section where they can be picked up by the side of the railroad track.^ Genus callocystites Hall [Ety.: xa/lAo?, beauty; y.{j(7Ti^, bladder] (1852. PalN. Y. 2:238) Calyx composed of large plates arranged in three or four cycles and having four pectinated rhombs, the component halves of which stand on contiguous plates and are separated by an interval. Mouth slit-like, and forming the center of radiation for two to five pinnulated arms, which some- times bifurcate, and are pro- tected by covering pieces, and either repose on the calyx or are sunk below the surface in grooves. Stem well developed, tapering down to a point. Callocystites jewetti Hall (Fig. 47) (1852. Pal N. Y. 2:239, Pl- 50) Distinguishing characters. Ob- long ovoid, nearly symmetric form; base of four plates, one bearing part of pectinated rhomb; eight plates in second cycle; anal , ' Fig. 47 Callocystites jewetti with the armgrooves aperture between second and spread out third cycle, excavated in two plates of the former and one of the latter; surface of plates ornamented by polygonal depressions, having a more or less defined border and granulose 'Specimens of this " crinoid " may be purchased from John Garlow, the watchman on the middle section of the New York Central railroad cut in the gorge, at a moderate Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustr
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