Page last updated at 16:41 GMT, Thursday, 29 January 2009

In pictures: Tanzania's toad haul

Species of toad from the Nectophrynoides genus (Image: Penelope Whitehorn/Frontier)

This toad from the Nectophrynoides genus is one of 15 amphibian species in Tanzania that have been described for the first time. They were found during research led by UK conservation charity Frontier.

Species of toad from the Nectophrynoides genus (Image: Penelope Whitehorn/Frontier)

This species of Nectophrynoides is still new to science and has not been given a common name yet. The toad is being studied by researchers in Italy and at the Natural History Museum, London.

Species of toad from the Nectophrynoides genus (Image: Penelope Whitehorn/Frontier)

As well as their distinctive markings and colourings, the researchers say Nectophrynoides are also unique because females give birth to offspring rather than lay eggs.

Species of toad from the Nectophrynoides genus (Image: Penelope Whitehorn/Frontier)

The researchers say that the range of these frogs appears to be restricted to a few remote valleys deep in the mountain forests of eastern Tanzania.

Burrowing toad from the Probreviceps genus (Image: John Graham/Frontier)

This species of burrowing toad, with its long nose, belongs to the genus Probreviceps. Its habitat in Tanzania's mountain forests is under threat from deforestation, the researchers warned.

Species from Leptopelis genus (Image: Penelope Whitehorn/Frontier)

Researchers believe this tree frog is a new species within the Leptopelis genus because it was found at higher altitudes than the similar looking Leptopelis parkeri (Parker's forest tree frog).



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