*Halliday, Tim: *-Tim Halliday (1945-2019) was one of the world's foremost authorities on amphibians. He was formerly professor of biology at the Open University and was International Director of the IUCN Declining Amphibian Populations Task Force for thirteen years.

*Halliday, Tim: *-Tim Halliday (1945-2019) was one of the world's foremost authorities on amphibians. He was formerly professor of biology at the Open University and was International Director of the IUCN Declining Amphibian Populations Task Force for thirteen years.