Subtribe

This leaves for consideration of this group of small tribes, or subtribes, so far as mapped by the writer quoted, the Teule, Cazcan, and Tecuexe.

The tempo of evolution in South American hamsters was very rapid – in the course of the Pliocene and Anthropocene 40 genera were formed here, at which time a series of them attained the level of tribe and subtribe (Oxymycteri, Phyllotiini, Ichthyomyini).

Brieger and his associates first divide the subtribe Epidendrinae […] into what could be called series, distinguishing four such series in the subtribe.