In biostratigraphy, a local-range zone, topozone or teilzone (German teil = part + Greek zone) [1] is the stratigraphic range of the rock unit between the first and last appearance datum of a particular taxon in a local area. [2] [3] [4] It is a subset of the global biozone for that taxon. [2] For the teilzone data to be meaningful, the local area must be identified. [4] The term was coined in 1914 by German paleontologist and geologist Josef Felix Pompeckj. [1]