FAUNAS FROM MISSOURI AND ILLINOIS. 
43 
76. 
78. 
79. 
80. 
81. 
82. 
83. 
84. 
85. 
86. 
87. 
88. 
89. 
90. 
Coelospira sp. n, ; cf. C. Camilla and 
C. concava. 
Coelospira sp.; cf. 0. concava. 
Leptocoelia flabellites. 
Leptocoelia acutiplicata. 
Anastrophia sp. n. 
Rensselseria ovoides. 
Rensselaeria suessiana? 
Reiisselreria ovalis? 
Rhynchonella oblata. 
Rhynchonella barrandii. 
Rhynchonella cf. speciosa. 
Rhynchonella sp. 
Eatonia medialis. 
Eatonia peculiaris. 
Centronella sp. n. ; cf. C. glans-fagea. 
91. 
92. 
93. 
94. 
95. 
96. 
97. 
98. 
99. 
100. 
101 . 
102. 
103. 
104. 
105. 
106. 
Cryptonella sp. n. 
Fenestclla cclsipora. 
Fenestella sp. 
Hemitrypa cf. columellata. 
Polypora sp.? 
Reptaria sp. 
Hederella sp. 
Clonopora sp. 
Fistulipoj-a sp. 
Zaphrentis cf. rcemeri. 
Zaphrcntis h|>.'.' 
Romingeria sp. 
Monticulipora. 
Trachypora sp. 
Edriocrinus sacculus. 
Hindia sp. 
Baileys Landing, Perry County, Missouri. — This fauna, referred to 
the "Lower Helderberg group" (Delthyris Shaly limestone) by Meek 
and Worthen, 1 is important in the present discussion, as it exhibits the 
combination of forms in this central area about a thousand miles dis- 
tant, to the south and west, from the typical New York localities. 
The fossils come from a limestone. The following list of species is 
given by Meek and Worthen: 
1. Striatopora missouriensis n. sp. 
2. Edriocrinus pocilliformis Hall. 
3. Orthis hybrida Sowerby? (cf. O. 
oblata.) 
4. Orthis subcarinata Hall. 
5. Strophomena (Strophodonta) cavum- 
bona Hall ? 
6. Merista laevis Van ? (sp. ) . 
7. Zygospira subconcava M. & W. 
8. Trematospira ? imbricata Hall. 
9. Cyrtina dalmani Hall (sp. ). 
10. Spirifer perlamellosus Hall. 
11. Platyceras subundatum M. & W. 
12. Platyceras spirale Hall. 
13. Platyceras (Orthonychia) pyramida- 
tum Hall ? 
14. Acidaspis hamata Con. (sp.). 
15. Dalmanites tridentiferus Shumard. 
Clear Creek, Union County, Illinois. — In a cherty limestone. 
The following fauna from southern Illinois is described by Meek 
and Worthen, 2 and referred to the Oriskany group by them. The 
species named occur in a cherty limestone, and are as follows: 
7. Rensselaeria condoni McChesney (cf. 
ovalis) . 
8. Stricklandinia elongata var. curta. 
=Ainphigenia curta M. & W. 
Strophostylus ? concellatus M. & W. 
Platyceras spirale Hall? 
1. Leptsena ? nucleata Hall. 
2. Rhynchonella speciosa Hall. 
3. Eatonia peculiaris Con. (sp.). 
4. Leptocoelia flabellites Con. (sp.). 
5. Spirifer engelmanni M. & W. (cf. S. 9 
arrectus) . 10 
6. Spirifer hemicyclus M. & W. (cf. £ 
varicosus) . 
Jonesboro, Union County, Illinois. — Meek and Worthen report the 
following species from a light yellowish, friable sandstone outcrop- 
iGeol. Survey Illinois, Vol. Ill, Geology and Paleontology, Fossils of the Lower Helderberg group 
(Delthyris Shaly limestone), 1868, pp. 368-392. 
2Geol. Survey Illinois, Vol. Ill, Geology and Paleontology, 1868, pp. 393-406. 
