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Iridescent ancient ammonite fossil on display at the American Museum of Natural History, New York City, around 2 feet in diameter. The Ammonoidea can be divided into six orders, listed here starting with the most primitive and going to the more derived: Agoniatitida, Lower Devonian – Middle Devonian; Clymeniida, Upper Devonian
Most of the generic names in this list come from Jack Sepkoski's 2002 compendium of marine fossil genera, which can be corroborated by other sources such as Part L, Ammonoidea, in the Treatise on Invertebrate Paleontology. Additional generic names included come from the Treatise or various peer review scientific journals.
Fossils of species within this genus have been found in the Jurassic and Cretaceous rocks all over the world, ... Mesozoic Ammonoidea, by W.J Arkell, Bernhard Kummel ...
Acanthoceras is an extinct cephalopod genus belonging to the subclass Ammonoidea and family Acanthoceratidae that lived from the Albian to early Coniacian stages of the Cretaceous. [ 1 ] Description
Agoniatitida, also known as the Anarcestida, is the ancestral order within the cephalopod subclass Ammonoidea originating from bactritoid nautiloids, that lived in what would become Africa, Asia, Australia, Europe, and North America during the Devonian from about the lower boundary of Zlichovian stage (corresponding to late Pragian, after 409.1 mya) into Taghanic event during upper middle ...
Hoplites is a genus of ammonite that lived from the Early Albian to the beginning of the Middle Albian. [2] Its fossils have been found in Europe, Transcaspia and Mexico.Shell has compressed, rectangular till depressed and trapezoidal whorl section.
Almost any fossil-bearing limestone or shale from inland seas of the late Paleozoic tropics or subtropics is likely to yield some goniatites. [1] In the USA, such rocks are found from Maine, New York, and Virginia and in every state west to Nebraska and south to Texas and Alabama; as well as in parts of almost every western state (with the ...
Fossil of Parkinsonia parkinsoni from Great Britain, on display at the Natural History Museum, London: Scientific classification; ... † Ammonoidea: Order: