“Alternatively, true differences may exist in the degree to which species hybridize in different biogeographic regions.”

“This ancestral biogeographic distribution encompassed a much broader range, comprising Siberia and southern Europe-northern Africa.”

“Russell reminds readers that we do not know the biogeographic origin of birds, or theropods, or dinosaurs.”

“Finally, we propose a biogeographical hypothesis of speciation events within the N. mediocris species complex.”

“Because of its systematic and biogeographical position, this genus is also relevant for the understanding of plant evolution.”

“Perhaps the most interesting feature of this subclade though is not conchological, but biogeographical.”