Reptiles and frogs of the Eastern Highlands Reptiles and frogs of the Eastern Highlands The reptiles and frogs of the Eastern Highlands of Zimbabwe and Mozambique mark a biodiversity hotspot for herpetofauna. Diverse frog and reptile communities include endemic species. The Eastern Highlands extend 300 kilometres (190 mi) along Zimbabwe's eastern border with Mozambique. There are two broadly defined high-altitude ecological habitats in the Eastern Zimbabwe montane forest-grassland mosaic; a wet lowland forest ecology predominates the eastern side of the mountain ranges, while a more arid ecology dominates the western side. The Highlands have a more equable climate than Zimbabwe's central plateau, with higher rainfall, low cloud
Evolution of reptiles as their fossil relatives. Lepidosauromorpha contained at least one major group of the Mesozoic sea reptiles: the mosasaurs, which emerged during the Cretaceous period. The phylogenetic placement of other main groups of fossil sea reptiles – the sauropterygians and the ichthyosaurs, which evolved in the early Triassic and in the Middle Triassic respectively – is more controversial. Different authors linked these groups either to lepidosauromorphs or to archosauromorphs, and ichthyosaurs were also argued to be diapsids that did not belong to the least inclusive clade containing lepidosauromorphs and archosauromorphs. The therapsids came under increasing pressure from the dinosaurs in the