Richuiond Group of Cincinnati Anticline — Focrstc. 353 
by the fact that the greater part of the overlying Richmond 
section in central Kentucky is practically unfossiliferoiis, 
and that a part of this section strongly resembles the banded, 
massive, argillaceous limestone forming the chief part of the 
Upper Richmond in southern Indiana. The occurrence im- 
mediately above the Bardstown coral bed, of fossils known to 
occur commonly in the Middle Richmond, does not Vitiate 
such a conclusion since th^ fossils so far identified from the 
beds immediately above the Upper Richmond or Madison coral 
reef in southern Indiana are such series as also occur in greater 
numbers in the Middle Richmond. 
However a comparison of the various Richmond sections 
along the western side of the Cincinnati anticline (Plate 22) 
suggests that the fossiliferous part of the section immediately 
above the .Bardstown coral bed in central Kentucky is the south- 
ern, attenuated extension of the richly fossiliferous section 
forming the lower part of the Richmond at Mount Washington, 
•and at Bull creek. But the fossiliferous part of the sections at 
Mount Washington and Bull creek is evidently of Lower and 
Middle Richmond age, and occurs below the Madison coral 
reef horizon. For the present, therefore, the conclusion is 
drawn that the formation of the Bardstown coral reef was not 
svnchronous with that of the Madison reef. 
A further examination of the accompanying sections will 
show that the Bardstown coral reef has been assumed to 
be the base of the Richmond stage in central Kentucky. This 
was done because at numerous localities characteristic Rich- 
mond fossils were found immediately above the coral reef, and 
no Richmond group brachiopods were found in the layers im- 
mediately beneath. At several localities, one or two specimens 
of Strcptclasnia rnsticnm and Protarca vctusta were found sev- 
eral feet below this coral bed. At some localities there are 
several coral beds, several feet apart or even at greater inter- 
vals, containing Coliimnaria alvcolata, Coluninaria halli. Te- 
trad in in minus, and occasionally even CaJopoecia cribriforniis. 
It then becomes difficult to determine where to draw the line 
between the Richmond and the Lorraine. The massive corals 
appear to have a greater vertical range in central Kentucky 
than in Ohio and Indiana. At several localities Streptelasina 
rustic uni occurs several feet lower than anv other fossil usuallv 
