Diplomoceratidae - Polyptychoceras Species
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Diplomoceratidae is a family of ammonites included in the order
Ammonitida Ammonitida, or true ammonites, are an order of Ammonoidea, ammonoid cephalopods that lived from the Jurassic through Paleocene time periods, commonly with intricate ammonitic sutures. Ammonitida is divided into four suborders, the Phylloceratina ...
. Fossils of species within this genus have been found in the
Cretaceous The Cretaceous ( ) is a geological period that lasted from about 143.1 to 66 mya (unit), million years ago (Mya). It is the third and final period of the Mesozoic Era (geology), Era, as well as the longest. At around 77.1 million years, it is the ...
sediments (age range: from 99.7 to 66.043 million years ago). Studies of ''Diplomoceras'' suggest that members of this family could reach lifespans of over 200 years.


Genera

* '' Chesapeakella'' Kennedy and Cobban, 1993 * '' Diplomoceras'' Hyatt, 1900 * '' Glyptoxoceras'' Spath, 1925 * '' Neancyloceras'' Spath, 1926 * '' Scalarites'' Wright and Matsumoto, 1954 * '' Neoglyptoxoceras'' Collignon, 1969 * '' Phylloptychoceras'' Spath, 1953 * '' Oxybeloceras'' Hyatt, 1900 * '' Polyptychoceras'' Yabe, 1927 * '' Pseudoxybeloceras'' Wright and Matsumoto, 1954 * '' Solenoceras'' Conrad, 1860


References


External links

* * Ammonitida families Turrilitoidea {{Ammonitida-stub