For breeds with wide geographic distribution, imports may provide sources of fresh genetic material provided the exporting country's registry is considered acceptable, the populations are not already substantially related, and the populations have not diverged in type to the point that breeders in each country consider the dogs in the other unsuitable. (ashgi.org)
Ibrahim cites variation among fossils of T. rex, as well as its wide geographic distribution — the iconic dinosaur has been found in both Texas and Canada, for example — when dismissing his critics» argument that a single spinosaurid species was unlikely to have lived in both Morocco and Egypt during the middle of the Cretaceous period. (discovermagazine.com)
«We now have important information about the behavior of these ancient organisms, and a clue as to why they had such a wide geographic distribution,» Ausich said. (sciencedaily.com)