According to molecular clock analyses, what was the estimated divergence time for Mephitidae (Skunks) and Mustelidae?
Answer
Approximately 34 Million Years Ago (MYA)
Molecular clock analyses provide estimates for when major branches split on the evolutionary tree. For the divergence between the lineage leading to Mephitidae (skunks) and the lineage leading to *Mustelidae* (weasels), the established estimate is approximately 34 Million Years Ago (MYA). This point marks a significant split within the *Musteloidea* superfamily, occurring subsequent to the initial split of the entire superfamily from other carnivorans around 42 MYA and the earlier divergence of Procyonidae around 39 MYA. This timing places the development of the distinct mustelid characteristics deep within the Cenozoic era.
Related Questions
What defines the classic weasel morphology that proved successful for exploiting tight spaces?Which groups are specifically named as members of the *Musteloidea* superfamily alongside *Mustelidae*?According to molecular clock analyses, what was the estimated divergence time for Mephitidae (Skunks) and Mustelidae?What major biogeographic event is cited as evidence for Musteloidea superfamily incursions into South America?How did the sea otter, a member of *Mustelidae*, modify the ancestral body plan for its marine environment?What geological period followed the demise of non-avian dinosaurs, initiating significant mammalian diversification?What dietary and cranial characteristic distinguishes the hypothetical Oligocene analog, *Protosmustela*, from modern *Mustela nivalis*?What common evolutionary theme explains the successful diversity within *Mustelidae*?How many species are estimated to comprise the family *Mustelidae* within the order Carnivora?Which mustelid is noted for representing an evolutionary push toward large size and resistance to cold, often called the 'skunk bear'?