× Zoogeographically, the Jordanian herpetofauna is heterogeneous, originating from four biogeographical
regions (Oriental, Palearctic, Saharo-Sindian, and Afrotropical) and occupying four different ecozones. Ninetythree
species and subspecies of amphibians and reptiles are recorded from Jordan, showing different
distribution patterns. The Mediterranean ecozone harbours the highest number (35) of recorded species,
followed by the Sudanian Tropical penetration zone (16), and the Badyiah ecozone (12), respectively. Jordan is
not separated by natural boundaries from the surrounding countries, which prevents the operation of isolation
mechanisms, and seems to result in the absence of endemism. There are, however, three areas of endemism
within the Eastern Mediterranean region taken as one whole unit: the Badyiah shared by Syria, Iraq, Saudi
Arabia and Jordan, the northern part of the Mediterranean ecozone shared by Lebanon, Israel, Syria and
Jordan, and southwest Jordan, Israel and Sinai. Some Palearctic species such as Coluber schmidti and C.
ravergieri are relicts of the postglacial period and continue to survive in refugal enclaves with delicate
ecological patterns. The distribution of some species, such as Bufo viridis, Mauremys caspica rivulata, Natrix
tessellata, Coluber ventromaculatus, C. jugularis asianus, Walterinnesia aegyptia, and Vipera palaestinae, has
been greatly influenced by climatic as well as anthropogenic changes.