Ammonites are spiral and straight-shelled mollusks that became extinct at the end of the Cretaceous Period, 65 million years ago

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Ammonites are spiral and straight-shelled mollusks that became extinct at the end of the Cretaceous Period, 65 million years ago.

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Size: 3309px × 5123px
Location: American Museum of Natural History, New York, NY, USA
Photo credit: © Ellen McKnight / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: american, ammonite, ammonitida, ammonoidea, cephalopoda, cretaceous, diorama, display, extinct, fossil, history, marine, mollusc, mollusca, mollusk, museum, natural, nautilus, period, placenta, placenticeras, prehistoric, reproduction, shell, spiral