Browse Items (3 total)

Mortoniceras sp Tombigbee Sand.jpg
(unnumbered) Extinct genus - Many ammonite specimens found in the Tombigbee sand do not show well preserved suture marks. This makes it more difficult to identify the fossil to species level.

10762 Morticeras sp Tombigbee Sand Late Cretaceous.jpg
(DSM# 10672) Extinct genus - Mortoniceras is recognized by its highly ornamented shell. Its closest relatives had more smooth shells.

10676 Mortoniceras texanum.jpg
(DSM# 10676) Extinct genus - Mortoniceras is commonly known from sediments of the Western Interior Seaway. The seaway was a wide swath of sea that roughly cut North America in half north to south during the Cretaceous and early Paleocene periods.
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