Which historical classification placed the yak in a separate genus or subgenus due to its physiological distance from lowland cattle?

Answer

*Poephagus*

Due to the substantial genetic and physiological divergence yaks exhibit compared to typical lowland cattle, some historical taxonomic treatments elected to place the yak in a separate genus or subgenus designated as *Poephagus*. Although *Bos grunniens* is the prevailing species name today, the continued mention of *Poephagus* in certain contexts acknowledges these significant biological distinctions. For instance, yaks possess crucial adaptations like larger lungs and hearts, and maintain fetal hemoglobin, which differentiate them starkly from *Bos taurus*.

Which historical classification placed the yak in a separate genus or subgenus due to its physiological distance from lowland cattle?
animalclassificationyak