Ameridelphia — historical grouping of New World marsupials Ameridelphia Ameridelphia: a traditional taxonomic grouping for New World marsupials—chiefly opossums and shrew opossums—comprising Didelphimorphia and Paucituberculata; its unity is debated by…
Genus (biological classification) Genus A genus is a principal taxonomic rank grouping closely related species. This article explains its role, naming conventions, history, practical use, and how taxa are delimited and r…
