Parapuzosia bradyi
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Parapuzosia bradyi Temporal range: Late Cretaceous |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | †Ammonoidea |
| Order: | †Ammonitida |
| Family: | †Desmoceratidae |
| Genus: | †Parapuzosia |
| Species: | †P. bradyi |
| Binomial name | |
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Parapuzosia bradyi Miller & Youngquist, 1946 |
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Parapuzosia bradyi is a gigantic species of ammonite, reaching diameters of more than 4.5 ft (1.4 m) by 6 ft (1.8 m). It is the largest species of ammonite in North America. It had a moderately involute shell with flat sides. The inner whorls are slightly oval-shaped with prominent ribbing. They are only known from the upper layers of the Eagle Sandstone and Cody Shale formations (both Late Cretaceous).
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