Mesogyrus is an extinct genus of fossil beetles in the family Gyrinidae, containing the following species:Gyrinidae Species List at Joel Hallan's Biology Catalog. Texas A&M University. Retrieved on 9 May 2012.
†Mesogyrus anglicus Ponomarenko et al. 2005 Durlston Formation, United Kingdom, Berriasian †Mesogyrus antiquus Ponomarenko, 1973 Karabastau Formation, Kazakhstan, Oxfordian †Mesogyrus elongates Ponomarenko 2014 Sharteg, Mongolia, Tithonian †Mesogyrus sibiricus Ponomarenko, 1985 Abasheva Formation, Russia, Pliensbachian †Mesogyrus striatus Ponomarenko, 1973 Byankinskaya Formation, Russia, Tithonian Daya Formation, Russia Hauterivian Turga Formation, Russia, Aptian
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