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Ammonites of prehistoric North America — a marine molluscs group of the prehistoric Cephalopods in North America. Subcategories This category has the following 5 subcategories, out of 5 total.
They are often called ammonites, which is most frequently used for members of the order Ammonitida, the only remaining group of ammonoids from the Jurassic up until their extinction. [2] Ammonoids exhibited considerable diversity over their evolutionary history, with over 10,000 species having been described. [3]
Areas of Cenozoic North America that were covered by seawater tended to be areas near the modern coasts. [135] The Cannonball Sea near Minot, North Dakota was the last of the North American interior. [136] Cenozoic marine invertebrates are best known from deposits near the coasts and tend to resemble modern forms.
Pages in category "Late Cretaceous ammonites of North America" The following 28 pages are in this category, out of 28 total. This list may not reflect recent changes .
This list of ammonites is a comprehensive listing of genera that are included in the subclass †Ammonoidea, excluding purely vernacular terms. The list includes genera that are commonly accepted as valid, as well as those that may be invalid or doubtful ( nomina dubia ), or were not formally published ( nomina nuda ), as well as junior ...
Late Cretaceous ammonites of North America (28 P) Pages in category "Cretaceous ammonites of North America" The following 7 pages are in this category, out of 7 total.
View history; Tools. Tools. move to sidebar hide. Actions Read; Edit; View history; ... Cretaceous ammonites of North America (2 C, 7 P) E. Early Cretaceous ammonites ...
Pages in category "Early Cretaceous ammonites of North America" The following 13 pages are in this category, out of 13 total. This list may not reflect recent changes .