. Bulletin - New York State Museum. Science. l60 NEW YORK STATE MUSEUM Genus lecanocrinus Hall [Ety.: Af/Avrj, basin; ^ lily] (1852. Pal N. Y. 2:199) This genus differs from Ichthyocrinus only in having a rhomboidal anal plate separating the two posterior radials, and fol- lowed by a somewhat larger anal interradial. Lecanocrinus macropetalus Hall (Fig. 55) (1852. Pal. N. Y. 2:199, pi. 45) Distinguishing characters. Subglobose calyx; three large infra- basals, the two larger truncated on top; larger basals, two pen- ^. f :'-r>% Fig. 55 Lecanocrinus macropetalus with analysis of calyx
. Bulletin - New York State Museum. Science. l60 NEW YORK STATE MUSEUM Genus lecanocrinus Hall [Ety.: Af/Avrj, basin; ^ lily] (1852. Pal N. Y. 2:199) This genus differs from Ichthyocrinus only in having a rhomboidal anal plate separating the two posterior radials, and fol- lowed by a somewhat larger anal interradial. Lecanocrinus macropetalus Hall (Fig. 55) (1852. Pal. N. Y. 2:199, pi. 45) Distinguishing characters. Subglobose calyx; three large infra- basals, the two larger truncated on top; larger basals, two pen- ^. f :'-r>% Fig. 55 Lecanocrinus macropetalus with analysis of calyx tagonal, one hexagonal and two heptagonal; subquadrangular anal plate following on heptagonal basals and succeeded by large inter- radial plate; large radials, two pentagonal and three with a short sixth side; costals 2x5, short, succeeded by distichals and palmars similar to Ichthyocrinus laevis; slender stem; smooth, thick joints alternating at irregular intervals with thin ones, and having slightly rounded edges and a round canal. Found in the Rochester shale at Lockport (Hall). May also occur at 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; New York State Museum. Albany : New York State Education Dept
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectscience, bookyear1887
