46 
AUG. F. FOERSTE 
At Ludlow Falls the Euphemia dolomite contains: 
Striatopora sp., large form, one-third inch in diameter 
Atrypa reticularis 
Brachyprion cf. newsomensis 
Orthis fiabellites 
Pentameriis oblongus 
Platystrophia daytonensis 
Rhipidomella hybrida 
Pentamerus ohlongus is fairly common in the Euphemia dolo- 
mite in some of its exposures southwest of Springfield, south of 
the railroad passing Cold Springs. 
The Cedarville, Springfield, and Euphemia dolomites are 
regarded as belonging to a single formation, characterized by 
the fact that at a certain horizon, known, as the Springfield 
dolomite, the rock is separable readily into flagging, suitable for 
building purposes, while the Euphemia dolomite below and the 
Cedarville dolomite above are not suitable for flagging. The 
term Durbin formation is used for this formation as a whole. 
At the Reinheimer quarry, south of New Paris, the so-called 
Laurel limestone contains Pisocrinus gemmiformis, and Stephano- 
crinus osgoodensis. The same species occur in the abandoned 
James Carl quarrj^, miles southwest of Lewisburg, up a small 
stream west of the road to Eaton. They occur at a number 
of other localities in Preble county, Ohio. In Indiana both 
species occur in the Osgood limestone, but Pisocrinus gemmiformis 
is cited also from the lower part of the Laurel limestone. At 
the quarry west of Drexel Park, f of a mile east of the Union 
road, north of the Eaton pike, Pisocrinus gemmiformis occurs 
in coarse-grained rock immediately beneath the Springfield 
limestone, assumed to be of Euphemia age. Immediately above 
the argillaceous strata which form the base of the exposed sec- 
tion along the creek a mile east of Leesburg, and north of the 
railroad, Stephanocrinus gemmiformis and Stephanocrinus ham- 
melli were found in strata apparently belonging to the Bisher 
formation. Small species of Pisocrinus and Stephanocrinus, 
difficult to discriminate except in the presence of good speci- 
