Box 25, Folder 13: Paleontology Notes 5? - Crinoidea B

times forming straight ridges from the centre to the angles of the plates.

L. 0.6 . D. 0.45

Middle Silurian - Niagara Group

Lockport N.York

Crinoiden

Leptocrinites

Lepocrinites Gebhardii, Conrad, N.Y. Geol. Report 1839 p. 207.

Body composed of plates of unequal sizes, a few of which have ambulacra, connecting this fossil with the echinodermata; lower half of the column apparently solid and traversed by a pentangular canal.

L 1.4 - D. 0.3

Schoharie N.Y.

[pen sketch]

Lepocrinites Gebhardii

4 p 329

Genus Lyriocrinus, Hall, Palaeont. of N.York. Vol. 2 p. 197 (1852)

Column round; pelvic plates five, pentagonal; costals plates five, resting on the oblique upper edges of the pelvic plates, and succeeded by five scapulars, which support an arm=plate, upon the oblique upper edges of which rest the hand=joints supporting a pair of fin= gers; a single interscapular plate between each pair of scapulars, with the two sec= onds fingers; a single interscapulars plates resting upon its oblique upper edges and the edges of the adjoining costals plates,

Gr lyrion a little lyre & krinon a lily