How Long do Trinidad’s Frogs Take to Reach Metamorphosis? Authors J. Roger Downie School of Life Sciences, Graham Kerr Building, University of Glasgow, Glasgow G12 8QQ, Scotland, UK Abstract Here I present observations of four species where the spawning and metamorphic times were known. Developmental staging is according to Gosner (1960). Downloads PDF Published 2013-12-31 Issue Living World 2013 Section Nature Notes