Megalodon was an extinct genus of bivalve molluscs that reportedly lived from the Devonian to the Jurassic Period. It is not clear, however, that all the fossils assigned to Megalodon from that span of time really belong in the same genus. Jurassic relatives of Megalodon such as Pachyrisma grande were closely related to the rudists. Megalodon is the only genus in the family Megalodontidae.
- "Megalodon". The Paleobiology Database. http://pbdb.org/cgi-bin/bridge.pl?action=checkTaxonInfo&taxon_no=18606&is_real_user=1. Retrieved 2009-10-29.
- McGugan, A. (1960). "A New Species of the Pelecypod Megalodon from the Permo-Carboniferous of the Banff Area, Alberta". Journal of Paleontology 34 (1): 101–106.
- Skelton, Peter W., & Smith, Andrew B. (2000). "Preliminary phylogeny for rudist bivalves: sifting clades from grades". In Harper, E. M., Taylor, J. D., & Crame, J. A.. Evolutionary Biology of the Bivalvia. Special Publication No. 177. Bath, UK: Geological Society. pp. 97–127. ISBN 1-86239-076-2.
- International Commission on Zoological Nomenclature (1996). "Opinion 1829. Megalodontidae Konow, 1897 (Insecta, Hymenoptera): spelling emended to Megalodontesidae, so removing the homonymy with Megalodontidae Morris & Lycett, 1853 (Mollusca, Bivalvia)". Bulletin of Zoological Nomenclature 53 (1): 66–67.
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