e/Appearance Event Ordination

Information
has gloss	eng: Appearance Event Ordination or AEO is a scientific method for biochronology through the ordering of the appearance of fossil mammal genera by multivariate analysis, using conjunctional (overlapping) and disconjunctional (nonoverlapping) range distributions in large sets of data. Process AEO is based on faunal overlap and stratigraphic superposition to derive a best-fit sequence of first and last appearance events. Step 1 The first step is to translate patterns of overlap and superposition into pairwise first-before-last statements. The wolf species Canis edwardii and Canis armbrusteri are used as example taxa for the following patterns. Each statement means that Canis edwardii, for example, must have first appeared before Canis armbusteri last appeared. This is true whenever either (1) Canis edwardii and Canis armbrusteri have been found together in at least one non-time averaged fossil collection, or (2) Canis edwardii is found lower in at least one lithostratigraphic section than Canis armbrusteri.
lexicalization	eng: Appearance Event Ordination
instance of	c/Dating methods