184 Proceedings of Indiana Academy of Science. 
PAINT CREEK LIMESTONE. 
The middle one of the three limestones examined, found in some 
places eighty to ninety feet higher stratigraphically than the lowest 
one, yielding the forms named below, and is consequently correlated 
with the Paint Creek formation of Weller in Illinois. The uncertainty 
recorded as to species in some cases is to be understood as indicating 
more or less difference from described forms; some of these may be 
new species, while others may deserve to be classed merely as variations 
marking less than specific divergence. The fauna as made out so far 
follows: 
Gastropods sp?. 
Cup corals (Zaphrentis?). 
Crinoid stems, locally abundant, some of large size. , 
Pentremites numerous, larger than in the lowest limestone. 
Archimedes, not numerous, but somewhat more abundant than in the 
lowest limestone. 
Pygidia of trilobites. Phillipsia?. 
Chonetes chesterensis, Weller. 
Cliothyridina sublamellosa (Hall). 
Composita suleata, Weller. 
Diaphragmus elegans (Norwood and Pratten). 
Eumetria verneuiliana (Hall). 
Girtyella (cf.) indianensis (Girty). 
Martinia’(cf.) suleata, Weller. 
Orthothetes kaskaskiensis (McChesney). 
Productus (cf.) ovatus, Hall. 
Pustula sp?. 
Spirifer sp?. 
OKAW LIMESTONE. 
The upper of the three limestones here referred to is found in some 
places within the areas examined seventy to eighty feet higher strati- 
graphically than the middle limestone, and on the basis of the fauna 
collected and the relations observed is correlated with the lower Okaw 
as defined by Weller from studies in Illincis. The fauna collected shows 
the following forms: 
Gastropods sp?, a few. 
Cup corals sp?,,many partly silicified in places. 
Bryozoans including abundant Archimedes. 
Crinoids numerous; mostly in fragmental state including wing plates 
of Pterotocrinus sp?. 
Pentremites abundant; some large forms. 
