What skull feature differentiates the *Myospalax* and *Eospalax* clades?
Answer
Occiput structure (convex vs. flat)
Molecular research analyzing complete mitochondrial genomes established a concrete morphological correlate for the genetic split observed between the two living genera, *Myospalax* and *Eospalax*. Taxonomists use the structural difference in the back of the skull, known as the occiput, to delineate these genera. One clade corresponds to the convex occiput type, while the other corresponds to the flat occiput type. This structural difference in the cranium provides a tangible morphological characteristic that mirrors the genetic divergence found between these two types of Zokors.
Related Questions
To which Class do Zokors belong based on characteristics like fur and endothermy?Molecular studies strongly place Zokors in which modern Family?What is the distinct taxonomic unit for Zokors at the subfamily level?Which two living genera currently comprise the Zokors?What skull feature differentiates the *Myospalax* and *Eospalax* clades?What key morphological distinction separates Zokors' digging habits from other Spalacidae?Which extinct Zokor genus is known from the Late Miocene fossil record?Which species is specifically identified as the Siberian Zokor or Altai Zokor?What geological event is closely linked in timing to the split between *Eospalax* lineages?To which Suborder within the Order Rodentia are Zokors assigned?