OF DENISON UNIVERSITY. 
123 
Figs. 26,29. Productus duplicostatus^ Win. Distorted dorsal and perfect 
ventral valve p. 21. 
Fig. 27. Macrodon striatocostaius , Her p. 21. 
Fig. 28. Macrodon. sp. Portsmouth. - 
30 ’ Leiopteria nasutus, Her. Bagdad p. 29. 
TABULATED LIST OF FOSSILS 
Known to Occur in the Waverly of Ohio. 
Compiled by W. F. Cooper. 
The following list is designed to display at a glance the verti- 
cal position of all species reported from the Waverly group. While it 
is attempted to include all species reported in Ohio, it has not been 
possible to entirely eliminate synonomy and it is probable that some 
species have been overlooked. 
Those species which have not been seen by us are indicated by 
an initial indicating, not the authority for the name, but the person 
upon whose observation the presence of the form in Ohio rests. Thus 
[W.] indicates Prof. Alex. Winchell, [H.] Prof. James Hall, [M.] 
Mr. F. B. Meek and [N.] Prof. J. S. Newberry. 
The sub-divisions in the table are artificial, but correspond in a gen- 
eral way with the horizons and sub-divisions indicated in Prof. Her- 
rick’s papers. They are as follows : I, all below conglomerate I. 
1 1, Bedford shale, I2, Berea grit, I3, lower part of Berea shale, I4, up- 
per part of Berea shale (about 150 feet, up to within 40-60 feet below 
cpnglomerate I.) I5, Waverly shale (40 feet below congl. 1 .) H, 
Kinderhook division, Hi, freestone of central Ohio, H2, shale below 
congl. H. Ill, Upper or Logan division, HIi, shale over conglomer- 
ate II, HI2 freestone and shale up to about 100 feet above congl. H, 
(Burlington), IH3, upper layers (Keokuk) about 25 feet. 
Additions and corrections to the list are solicited. 
