Illustration of Fossils found in Corniferous Limestone

[Illustrations of Fossils]

From corniferous limestone-a layer exactly like the water limestone at Louisville. The fossil usually is a circular depression (e) with a cential column-bottom with 20 to 48 rays

a. natural size
b-twice the size of native
c 4 times nat size
[linear]
d side view of the column, as seen in some cavities. The column itself is always gone.
e-Circle and cential column.