This followed the work of John Prothero and Klaus Jurgens who strictly looked to related longevity and body mass.
[5] Buffenstein identifies the Longevity Quotient as the ratio of actual MLSP to that predicted by body mass.
Recent LQ based research identified some bats are relatively much long-lived.
Buffenstein describes the evolutionary theory of aging as a nonadaptive result of the declining power of natural selection allowing harmful genetic mutations may prevail suggesting that species living underground would have long life spans.
Using LQ measures it appears that only the social subterranean species have high LQs.