getTaxonomy: Get the taxonomical heirarchy for a given taxon
Description
Given the Taxon Version Key (a 16-character string), this function get details
of the taxonomical heirarchy above the given TVK. This gives the rank, name and
preferred Taxon Version Key for each level of the taxonomy
Usage
getTaxonomy(tvks = NULL, ...)
Arguments
tvks
A Taxon Version Key (TVK) which is a 16-character string ID