58 THE UNIVERSITY OF KANSAS PALEONTOLOGICAL CONTRIBUTIONS 98 99 FIGURES 95-100. Species <strong>of</strong> Cribroblastus HAMBACH and Cryptoblastus ETHERIDGE & CARPENTER. 95-97. Cribroblastus cornutus (MEEK & WORTHEN), Upper Mississippian, St. Louis Limestone, Illinois (Univ. Illinois, no. X-361) and ?Warsaw Limestone, Fenton, Mo. (U.S. Natl. Mus., no. S3,771); 95, summit area (no. S3,771), X7.5; 96, cross section <strong>of</strong> ambulacrum (no. S3,77I), X15; 97, part <strong>of</strong> ambulacrum, showing main and outer side plates (no. X-361), X90. 98-100. Cryptoblastus melo (OwEN & SHUMARD), Lower Mississippian, Burlington Limestone, Burlington, Iowa (U.S. Natl. Mus., no. S3,766, S4,959); 98, summit area (no. S4,959), X7.5; 99, basal area (no. S4,959), X7.5; 100, part <strong>of</strong> "D" ambulacrum, showing main and outer side plates (no. S3,766), X37.5. [Explanation.-"A," amb.; An, anal opening; "B," amb.; Bf, brachiolar facet; Bp, brachiolar pit; "C," amb.; C, canal (radial); "D," amb.; D, deltoid; "E," amb.; ED, epideltoid; H, hydrospire; HD, hypodeltoid; L, lancet; 0, oral opening; OSp, outer side plate; P, pore; R, radial; RI, radial limb; S, spiracle; Sp, main side plate; Su, superdeltoid; Z, azygous basal.] FIGURES 101-112. Devonoblastus tvhiteavesi REIMANN, Middle Devonian, Hungry Hollow Formation, Thedford and Arkona, Ontario (Univ. Michigan, nos. 34,467, and 35,036; Buffalo Soc. Nat. Sci., no. E13,065; Geol. Survey Canada, no. 3,661; U.S. Natl. Mus., no. S4,648), and Tichenor Limestone, New York (U.S. Natl. Mus., No. 142,025). 101. Summit area (no. 35,036), X15. 102. Anal area, drawn from polished tangential section (no. 34,467), x15. 103. Anal area, drawn from deep polished tangential section (no. E13,065), X15. 104. Proximal columnal, aboral view (no. 35,036), X15. 105. Stem impression (no. 3,661), X15. 106. Partial cross section <strong>of</strong> "E" ambulacrum (no. 34,467), X15. 107. Cross section <strong>of</strong> "E" ambulacrum (no. E13,065), aboral view, x15. 108. Cross section <strong>of</strong> "E" ambulacrum (no. S4,648), oral view, X15. 109. Part <strong>of</strong> "C" ambulacrum, showing side plates (no. 3,661), X40. 110. Part <strong>of</strong> "E" ambulacrum, showing side plates (no. E13,065), X40. 111. Part <strong>of</strong> "A" ambulacrum, showing side plates (no. 35,036), X45. 112. Part <strong>of</strong> ambulacrum (no. 142,025), X30. [Explanation.-An, anal opening; Bf, brachiolar facet; Bp, brachiolar pit; "C," amb.; C, canal (radial); CR, cryptodeltoid; "D," amb.; Db, deltoid body; DI, deltoid lip; Ds, deltoid septum; H, hydrospire; HD, hypodeltoid; L, lancet; 0, oral opening; OSp, outer side plate; P, pore; Pf, pore furrow; R, radial; R1, radial limb; S, spiracle; Sp, main side plate; Su, superdeltoid; Z, azygous basal.]
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