Vieraella Herbsti
Katak sejati terpurba dari zaman Yura awal, sekitar 188-213 juta tahun lalu.
Bacaan lanjut
Griffiths, Richard A. Newts and Salamanders of Europe. San Diego, CA: Academic Press Inc., 1996.
Larson, Allan. (1996). Caudata. Tree of Life Web Project.
http://tolweb.org/tree?group=Caudata&contgroup=Living_Amphibians. (Accessed: 2003).
Milner, A.R. 1988. The relationships and origins of living amphibians. Pp. 59-102 In M. J. Benton (Ed.), The Phylogeny and Classification of the Tetrapods. 1. Amphibians, Reptiles, Birds. Oxford University Press, Oxford.
Sumber gambar
http://evodisku.multiply.com/journal/item/24/amfibieen_evolutie_en_geologie
page revision: 1, last edited: 26 May 2009 09:25