Conus sp.

Phylum Mollusca
Class Gastropoda

(Scale bar is 1 cm)

Fossil molluscs in the limestones of Georgia, excepting oysters and scallops, are usually preserved as molds or casts because the shell is originally made of a relatively unstable mineral (aragonite). This usually makes them difficult to identify and so not very useful for dating rocks or for making environmental inferences.

The exceptions are those species belonging to groups with very characteristic shapes, such as the cone shells. Molds such as this are very common in the Ocala Limestone of Georgia. Because cone shells are presently much more diverse and common in tropical seas, the inference suggested is a much warmer climate for southwest Georgia during the late Eocene than at present, one supported by other paleontological and lithologic evidence.


AGE: LATE EOCENE

FORMATION: OCALA LIMESTONE

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