This mentioned taxonomy is an attempt to make an conclusive assignment from the different classifications of various scientists. Because the taxonomy may change due to the latest investigative methods and other findings, our map is a guide only.
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Reference- and Source indication, Literature
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O. S. Dzyuba, 2018 - New belemnites (Megateuthididae, Cylindroteuthididae)from the Bajocian and Bathonian of the Yuryung-TumusPeninsula, northern Siberia, Russia and their palaeobiogeographicimplications - Palaeontologische Zeitschrift (92), 87-105 (journal article, English)
J. J. Sepkoski, Jr., 2002 - A compendium of fossil marine animal genera - Bulletins of American Paleontology (363), 1-560 (serial monograph, English)