MegalodontidaeMegalodontidae is an extinct family of bivalve molluscs that reportedly lived from the Devonian to the Jurassic period.NomenclatureA family of insects was also previously called "Megalodontidae", containing the sawfly genus Megalodontes. In order to remove the homonymy, that family has been renamed Megalodontesidae.Genera†Conchodon†Gemmellarodus di Stefano, 1912†Megalodon Sowerby, 1827†Neomegalodon Guembel, 1864†Pachyrisma†Protomegalodon†Pterocardia Bayan, 1874†Quemocuomegalodon Yao et al. 2003†Rhaetomegalodon†Triadomegalodon Vegh-Neubrandt, 1974