AMP:RICAN SILURIAN CRINOIDS 
229 
Fig. 14. 
14a!. 
15 - 
Fig. 16. 
i6a. 
17. 
18. 
1 8a. 
19. 
20. 
20a. 
Fig. 21. 
PAGE 
Cremacrinus kentuckiensis (Miller and Gurley) 109 
L. ant. view of crown, showing long median arm bifurcating on 14th brachial. 
Posterior view of same, turned to bring stem to middle, which is the plane of bilateral 
symmetry; tube projecting at distal end. 
Post, view of another crown, showing anal tube in middle with stem to the right; one 
ramus of diminished r. ant. arm seen at right, to be compared with ramus of 1. post, 
arm at left. 
Trenton group, Ordovician; Mercer County, Kentucky. 
Cremacrinus punctatus Ulrich no 
The type specimen; 1 . post, view of crown. 
Ant. view of same; lower part of r. ant. arm broken away but some distal branches 
remaining. 
R. post, view of a typical specimen with the hinged base closed, showing anal plates and 
eccentric position of stem to right of them; 4th (r. ant.) arm in place; superradials 
and inferradials of r. post, and r. ant. arms, with edges of the former deeply indented 
by pressure of stem ; also the 4 unfused basals. X 2. 
Ant. view of similar specimen with the 4th arm (r. ant.) in view alongside of ant. arm. 
X2. 
R. post, view of same. X 3/2. 
Similar view of better preserved specimen, showing more fully the two lateral arms with 
their bifurcations, and the median arm in profile at the right. X 2. 
Calyx of another specimen seen from the hinge, with its widely gaping fissure lodging 
numerous “ supplementary ” plates, and its denticulate margin ; also the 4 unfused 
basals, and the elongate inferradial. 
The same enlarged, showing the hinge in greater detail. X 2. 
Black River (Decorah), Ordovician; Minneapolis, Minn. 
Calceocrinus bassleri new species 117 
A complete crown in partially erect position, with nearly entire stem attached; median 
and adjoining arms shown to full length, with large ramules continuous with the 
outer Betabrachs forming the most conspicuous part, while the main element of the 
axil-arms is visible in some places ; hinge between radials and basals well shown. 
Beech River formation; Decatur County, Tennessee. 
