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

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Ichthyocrinus Burlingtonensis
Complete

Ichthyocrinus Burlingtonensis

Ichthyocrinus Conrad - Hall

Iowa Rep. 1 p 557. (1858)

I. Burlingtonensis, Hall, Iowa Rep 1 p 557 Fig 75

Burlington Limestone

Burlington Iowa.

Last edit almost 3 years ago by EricRoscoe
p.1
Complete

p.1

4 p 319

Genus Lecanocrinus, Hall, Palaent. of N.York, Vol. 2 p. 199 (1852)

Pelvis composed of three plates; second series consisting of five, with an intercalated plate; third series, or scapular plates broad, with an interscapular plate in the same range; arms with two joints, above which are several sub= divisions closely arranged, the plates uni= ting laterally without interlocking.

Gr and krinon lily

Last edit almost 3 years ago by EricRoscoe
p.2
Complete

p.2

Lecanocrinus macropetalus, Hall

Pal. of NY. Vol. 2 p. 199 pl. 45 fig. 1

Body sub- globose; pelvis composed of three small plates; succeeded by five

imensions,

[pencil sketch]

l, one reg=

ptagonal;

ntercostal

two of them

Lecanocrinus macropetalus

a short

pular plate;

arm=plates two, above which the plates subdivided a second subdivision occur= ing above the third or fourth plate from the first division; extremities of the fingers folded inward, leaving an open cavity at the summit; column round, composed of smooth, alternately thicker and thinner joints which artic= ulate strongly upon their outer-margins;

Last edit almost 3 years ago by EricRoscoe
p.3
Complete

p.3

Lecanocrinus macropetalus, Hall

Pal. of N.Y. Vol. 2 p. 199 pl. 45 fig. 1

Body sub- globose; pelvis composed of three small plates; succeeded by five costal plates of very large dimensions, two of these are pentagonal, one reg= ularly hexagonal, and two heptagonal; a single sub= quadrangular intercostal plate; scapular plates five, two of them pentagonal, and three with a short sixth side; a single interscapular plate; arm=plates two, above which the plates subdivided a second subdivison occur= ing above the third or fourth plate from the first division; extremities of the fingers folded inward, leaving an open cavity at the summit; column round, composed of smooth, alternately thicker and thinner joints which artic= ulate strongly upon their outer margins;

Last edit almost 3 years ago by EricRoscoe
p.4
Complete

p.4

Canal rounded, with sometimes indications of a tripetalous form

H. 1.3 - D 1.0 - D. of column 0.13

Medial

Middle Silurian - Niagara shale

Lockport N.Y.

Last edit almost 3 years ago by EricRoscoe
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