Systematic allocation is based on strong morphological affinities of the genus Kerivoula. the second kind is attested in the upper Eocene (about -40 But) the Fayum in Egypt series. Khonsunycteris was described by Gunnel et al., 2008. The presence of these taxa on two continents from the Eocene implies a more ancient divergence (in the surrounding of -48, -49 But) as has been suggested by Simmons in 2005. les Molossidae sont également présent dès l’Eocène.
Aina ya pili ulioshuhudiwa katika Eocene ya juu (kuhusu -40 Lakini) Mfululizo wa Fayum katika Misri. Khonsunycteris ilivyoelezwa na Gunnel et al., 2008. uwepo wa haya kiasi cha aina katika mabara hayo mawili kutoka Eocene ina tofauti mapema (mazingira ya -48, -49 Lakini) kama imekuwa unahitajika kwa Simmons 2005. les Molossidae sont également présent dès l’Eocène.