Devonian Era in the Ohio Basin. — Clay pole. 243 
Bibliographical References for the Tables. 
Ohio, etc. 
a — Palaeontology of Ohio, Vols. I and II. 
b — Bulletin of the National Institute, 
c — American Geologist, 1893 & c - 
d — Palaeozoic Fishes of North America, Monograph, 
e — Annals of the New York Academy of Science, 
f— Palaeontology of Ohio, Vol. III. in Geol. of O., V. VJ I. 
g— Bulletin 16 of the U. S. G. S. 
h — American Journal of Science, 1884. 
i — Contribution to Canadian palaeontology, 1893. 
j — Zeitschrift der deutschen geologischen Gesellschaft. 
k — Proceedings of the Am. Philosophical Society, 1883. 
1 — 35th Report of the N. Y. State Museum of Natural History, 
m — Journal of the Acad, of Nat. Sc. of Philadelphia, II, 3, 164. 
Pennsylvania. 
Report B — Bradford Co. 
Report C — Columbia Co. 
Report H — Huntingdon Co. 
Report M — Monroe Co. 
Report P — Perry Co. 
Report S — Snyder Co. 
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Brachiopoda. 
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H.M.P. 
B.C.H.P. 
B.C. P. 
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H.M.P. 
H.M.P. 
B.C.H.P. 
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fimbriata (conradana) H.. 
euryteines & fornacula H. 
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H.M.P. 
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