ECHINODERMATA - KU ScholarWorks - University of Kansas

54 THE UNIVERSITY OF KANSAS PALEONTOLOGICAL CONTRIBUTIONS
overlapping the cryptodeltoids. The hexagonal superdeltoid
is adjacent to the oral opening on the adorai side
of the anal opening or anispiracle. Thus there are five
spiracles surrounding the oral opening-four spiracles
in addition to the anispiracle. Five hydrospire folds occur
on each side of an ambulacrum.
Ambulacra five, linear, each 20 mm. long by 1.5 mm.
wide, with side plates covering lancet plate, and 34 side
plates in 10 mm. length of each ambulacrum. The side
plates are normally disposed, with the subtriangular secondary
side plates resting on the bevelled adoral-abmedial
corners of each elongate subquadrangular primary side
plate. One large pore is present between adjacent side
plates and radial margins, but pores are absent along the
deltoid margins. There are five cover-plate sockets to
each side plate along the main food groove. The surfaces
of the calyx plates are ornamented with fine growth lines
parallel to plate margins.
Remarks.-The above description is based on characters
seen in two specimens, one complete and one polished
specimen, here considered to be the original types.
Occurrence.-Middle Devonian, Eifel beds, PeIm,
Germany.
Types.-Holotype, 325, one specimen complete,
Schultze collection, figured by SCHULTZE pl. 13, fig. 6;
paratype, 325, one polished section, figured by SCHULTZE
pl. 13, fig. 6e (selected lectotypes by me), Harvard Museum
of Comparative Zoology, Cambridge, Mass.
CORDYLOBLASTUS CLAVATUS (Schultze)
Plate 20, figures 1-9; text-figs. 80-81
Pentremites clavatus SCHULTZE, 1866, 1867, p. 225, pl. 13, fig. 7.
Description.-Calyx calcitic, club-shaped in side view,
pentagonal in top view, 15 mm. long by 9 mm. wide,
with vault 8 mm. long, pelvis 7 mm. long, pelvic angle
on basals 40 degrees and on radial bodies 115 degrees,
with periphery at radial lips slightly below mid-height.
Stem impression round, crenellar, not well preserved.
Basal circlet conical and elongate in side view, round in
basal view, flattened triangular at contact with stem, 5.5
mm. long by 4.5 mm. wide, with three normally disposed
basais that each has a prominent medium ridge
near the aboral end. Radials five, each elongate hexagonal,
10 mm. long by 4.5 mm. wide, with long, narrow, shallow
sinus 8 mm. long by 2 mm. wide; radials overlapping
deltoids.
Deltoids four, short, not visible in side view, with
one spiracle in each adoral tip and four V-shaped deltoid
lips adjacent to oral opening. On anal side the anispiracle
is visible between the superdeltoid and hypodeltoid. Hypodeltoid
visible in side view.
Ambulacra five, linear, each 9 mm. long by 2 mm.
wide, with lancet covered by side plates except near adoral
end. Side plates normally disposed, with 24 side plates
in 10 mm., and one pore between adjacent plates along
radial margins. The surfaces of the calyx plates are ornamented
with fine growth striae parallel to plate margins.
Occurrence.-Devonian, Calizas de Arnao, Leon,
Spain (described specimen), and Devonian near Kerpen,
Nollenbach, Germany (syntypes).
Types.-Syntypes, 539, nine specimens, Schultze collection,
old number 2346, Harvard Museum of Comparative
Zoology, Cambridge, Mass. Plesiotype, 19,090, one
specimen (described), Gurley collection, Walker Museum,
University of Chicago, Chicago, Illinois. Plesiotype,
S3,613, two specimens, Springer collection, from area
near Sabero, Spain, U. S. National Museum, Washington.
CORDYLOBLASTUS EIFELENSIS (Roemer)
Plate 21, figures 1-10; text-figs. 82-89
Pentatrematites eifelensis ROEMER, 1852-54, P. 280.
Description.-The description is based mainly on
observed characters of one specimen (no. 213) in the
Schultze collection. Calyx calcitic, club-shaped in side
view, pentalobate in top view, 18.5 mm. long by 13.5 mm.
wide, vault 4.5 mm. long, pelvis 14 mm. long, pelvic
angle on basais 35 degrees and on radial bodies 70 degrees,
with periphery at radial lips well above mid-height. Stem
FIGURES 77-86. Species of Cordyloblastus FAY, II. gen., Devonian, Europe.
77-79. C. acutangulus (ScuuurzE), Eifelian, Pe1m, Germany
(Harvard Mus. Comp. Zoology, no. 325); 77, summit
area of calyx and part of "CD" (anal) interambulacrum,
X15; 78, partial cross section of "D" ambulacrum,
X15; 79, part of "C" ambulacrum, showing main and
outer side plates, X15. 80, 81. C. clavatus
(Scrnn.TzE) Middle Devonian, Nollenbach, Germany
(Univ. Chicago, no. 19,090); 80, stem impression at base
of calyx, X15; 81, part of "B" ambulacrum, showing
main and outer side plates, X45. 82 86. C. eifelensis
(RoEmER), Eifelian, Nollenbach, Germany (Harvard
Mus. Comp. Zoology, nos. 213, 305; Buffalo Soc. Nat. Sci.
no. E21,087); 82, anal area (no. 213), X15; 83, anal area,
drawn from polished tangential section, hypodeltoid lacking
(no. 305), X15; 84, partial cross section of "A" ambulacrum
(no. 213), X15; 85, part of "C" ambulacrum,
showing main and outer side plates (no. 213), X45; 86,
summit area and part of "CD" (anal) interambulacrum
(no. E21,087), X45. [Explanation.-"A," amb.; An, anal
opening; Bf, brachiolar facet; Bp, brachiolar pit; "C,"
amb.; C, canal (radial); CR, cryptodeltoid; "D," amb.;
Db, deltoid body; D1, deltoid lip; H, hydrospire; HD,
hypodeltoid; L, lancet; 0, oral opening; OSp, outer side
plate; P, pore; Pf, pore furrow; R, radial; RI, radial limb;
S, spiracle; Sp, main side plate; Su, superdeltoid; Z, azygous
basal.]