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Seminola crassa (Wade 1917) Sea Snail Fossil

(DSM# FK321) Extinct genus - This marine snail is relatively common in the Coon Creek tongue of the Ripley Formation but is less well-known from this locality.

Anchura calcais (Conrad 1860) Sea Snail Fossil

(DSM# FK341) Extinct genus - This marine gastropod had an unusually high spire on its shell.

Anchura abrupta (Conrad 1860) Sea Snail Fossil

(DSM# 3257/FK189) Extinct genus - This marine gastropod had an unusually high spire on its shell.

Pugnellus densatus (Conrad 1860) Sea Snail Fossil

(DSM# 3257/FK143) An extinct genus of marine snail.

Pterocella sp. (Meek 1864) Snail Fossil

(DSM# 10667) Extinct genus - Pterocerella (pelican foot snail) was a highly ornamented detritivore (bottom feeding) species of snail.

Exogyra costata (Say 1871) showing damage to growth lines.

Exogyra costata are commonly found in the Cretaceous strata in northeast Mississippi. This example from the Dunn-Seiler Museum shows damage to the growth lines that were repaired as the creature grew.

Geologic Time Line

This chart shows the way geologic time is broken down into smaller spans of time called Eons, Eras, Periods, and Epochs. The top of the chart is current time, labeled as 0 Ma (0 years before present). The bottom of the chart represents the beginning…

Stratigraphic column showing the Paleoozoic formations of North Mississippi (from Roadside Geology of Mississippi, used with permission of the authors)

Stratigraphic column showing the Mesozoic formations of North Mississippi (from Roadside Geology of Mississippi, used with permission of the authors)

Stratigraphic column showing the Cenozoic formations of North Mississippi (from Roadside Geology of Mississippi, used with permission of the authors)

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