112 THE UNIVERSITY OF KANSAS PALEONTOLOGICAL CONTRIBUTIONS H. GRANATOCRINIDAE (Mississippian-Permian) [Genera, see nos. 93-116 1 93. Hydrospire folds three or more on each side <strong>of</strong> an ambulacrum 95,96 94. Hydrospire folds two or one on each side <strong>of</strong> an ambulacrum 97,98 95. Hydrospire plate present, five pores to each side plate, pores absent along deltoids Mesoblastus 96. Hydrospire plate absent, simple pores present along deltoids 99, 100 97. Hydrospire folds two on each side <strong>of</strong> an ambulacrum 101, 102 98. Single hydrospire fold on each side <strong>of</strong> an ambulacrum 103, 104 99. Hydrospire folds five on each side <strong>of</strong> an ambulacrum Calycoblastus 100. Hydrospire folds three on each side <strong>of</strong> an ambulacrum Lophoblastus 101. Hydrospire plate present, two pores to each side plate along radial margins 105, 106 102. Hydrospire plate absent, pores simple 107, 108 103. Pores present along deltoid margins 109, 110 104. Pores absent along deltoid margins ..__Monadoblastus 105. Radials overlapping deltoids, interradial sutures even, calyx base convex .. Tanaoblastus 106. Radials overlapping deltoids except at adorai tip where overlap is reversed, interradial sutures indented, calyx base flat to concave Cry ptoblastus 107. Deltoids without coronal process .. Carpenterob/astus 108. Deltoids with coronal process 111, 112 109. One pore to each side plate along deltoid margins 113,114 110. Two pores to each side plate along deltoid margins 115,116 111. Deltoids short, overlapped by radials .. Cribroblastus 112. Deltoids long, overlapping radials Heteroblastus 113. Deltoids short, overlapped by radials Poroblastus 114. Deltoids long, overlapping radials Monoschizoblastus 115. Calyx large, radials overlapping deltoids Granatocrinus 116. Calyx small, radials abutting against deltoids Ptychoblastus I. NUCLEOCRINIDAE (Devonian) [Genera, see nos. 117-120] 117. Oral plates five, generally wide, with cryptodeltoids closely adjacent to each other externally on adorai side <strong>of</strong> anal opening Nucleocrinus 118. Oral plates more than five, calyx generally elongate or oval, with externally visible plate between adorai tips <strong>of</strong> cryptodeltoids 119, 120 119. Calyx oval, with 18 to 21 oral plates Elaeacrinus 120. Calyx elongate oval, with six or seven oral plates Placoblastus J. SCHIZOBLASTIDAE (Mississippian-Permian) [Genera, see nos. 121-124] 121. Spiracles near oral opening 123, 124 122. Spiracles well separated from oral opening at aboral corners <strong>of</strong> deltoids Acentrotremites 123. Lancet covered by side plates, deltoids overlapping radials 124. Lancet exposed to full width, radials overlapping deltoids Schizoblastus Deltoblastus EXPLANATION OF PLATE 39 FIGURE PAGE 1,2. Ileteroblastus (WM berlandi ETHERIDGE & CARPENTER, topotype, S3,776, Springer coll., U.S. Natl. Mus.; Lower Carboniferous, Yoredale (Viséan), near Hexham, Northumberland, England; interambulacral and ambulacral views <strong>of</strong> fragmentary specimen showing long deltoids overlapping radial plates ( X7.5, X7.8) 76 3-9. Granatocrinus granulatus (RoEmER), Lower Mississippian, New Providence Formation, Kentucky, Tennessee. 3-5,7. Plesiotypes, S3,751, Springer coll., U.S. Natl. Mus.; headwaters <strong>of</strong> Medlock's Creek, 10 miles south <strong>of</strong> Lebanon, Marion County, Ky.; 3, oral view <strong>of</strong> summit showing eight spiracles and anispiracle around oral opening (X8); 4, ambulacral view showing side plates completely covering lancet ( X10.7); 5, "C" ambulacral view <strong>of</strong> another specimen showing pores in hydrospire plate marginal to side plates and lancet ( X4); 7, view <strong>of</strong> radiodeltoid suture showing radials overlapping deltoids, (same specimen as shown in fig. 3) (X8).-6. Topotype, 33,080, Troost coll., U.S. Natl. Mus.; Bedford County, Tennessee; labelled Granatocrinus cidariformis (after HAMBACH, 1903, pl. 3, fig. 2, designated Cidaroblastus granu1aris) (X1).-8. Plesiotype, 127,323, James Conkin coll., U.S. Natl. Mus.; New Providence Formation (upper part <strong>of</strong> Coral Ridge member), east quarry <strong>of</strong> Coral Ridge Brick Company yards, Coral Ridge, southwestern Jefferson County, Kentucky; labelled Orbitremites oppelti; polished cross section showing one hydrospire fold on each side <strong>of</strong> ambulacrum ( X10). 9. Plesiotype, S5,746, Springer coll., Univ. Michigan; Mason County, Kentucky; area <strong>of</strong> radiodeltoid suture showing large rounded spines <strong>of</strong> a specimen labelled Schizoblastus granulosus ( X8) 74
UNivrizsiTY OF KANS PAI.1 ON1.7.1.0(.TC AI CONTRIBUTIONS FcifiNotwRmAT A, I RTICI 3 PLAT!. 39 FAV -BL AS FO IL) S TUDII