Remarks on Glyptocrinus and Reteocrinus, two genera of Silurian crinoids

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1883
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Abstract
IN the second part of our Revision of the Palreocrinoidea, at page 185, and following, we undertook to define the character and relations of Glyptocrinu8 and allied genera, in such a manner as to render it possible to group the species thereunder with some approach to their natural order.As is well known to everyone who has attempted to identify the species, the American Silurian Crinoids are an extremely difficult group to understand.There are a few well marked sJ)ecies, of which ample collections have been made in Ohio and Indiana, but a large number of species have been described by Billings, Hall and others, from very meagre and imperfect material.Of many of these forms specimens are exceedingly rare, and we are often obliged to rely upon illustrations which are unsatisfactory, and descriptions which are necessarily defective in the delineation of specific and even generic characteristics.Under these circumstances it was scarcely to be expected that our conclusions would prove entirely satisfactory, even to ourselves.Our treatment of the genera Glyptocrinus and Reteocrinus has been somewhat sharpl'y criticized by Mr. S. A. Miller, in the Journal of the Cincinnati Society of Natural History for April, 1882, in connection with the description of some new species un-
Reference Key
openalex_W2313897919 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Charles Wachsmuth, Frank Springer
Journal american journal of science
Year 1883
DOI
10.2475/ajs.s3-25.148.255
URL
https://ajsonline.org/article/64026.pdf
Keywords Keywords not found

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