Racine, Wisconsin

Front 1

When?

Back 1

mid Silurian reef 425 Ma

Front 2

B

Back 2

Brachiopods

Front 3

B

Back 3

Bryozoans

Front 4

C's (4)

Back 4

Cephalopods, coral, crinoids, calcerious algae

Front 5

C

Back 5

Calcareous Algae

Front 6

C

Back 6

corals

Front 7

C

Back 7

crinoids

Front 8

S

Back 8

snails

Front 9

S (2)

Back 9

stromatoporoids, snails

Front 10

T

Back 10

trilobites

Front 11

Back 11

that's it