Placenticeras meeki is an ammonite species from the Late Cretaceous. These cephalopods were fast-moving nektonic carnivores. They mainly lived in the American Interior Basin (Western Interior Seaway).
Shells of this species could reach a diameter of about 1 metre (3 ft 3 in). They are discoidal, involute and compressed. Whorls are stout and rounded to diameter of 3 millimeters. The surface of fossils is usually covered by opalized nacre (ammolite).
The name honours Fielding Bradford Meek.
- J.B. Reeside A comparison of the genera Metaplacenticeras Spath and Platcenticeras Meek Professional Paper - United States Geological Survey
- Sepkoski, Jack Sepkoski's Online Genus Database – Cephalopodes
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