Chapter 25: Vertebrate Diversity Three Groups of Amphibians Caecilians Are legless, burrowing amphibians that live in the tropics. There are 160 species ranging in ...
Vertebrates are part of a larger phylum called Chordata which includes ... After the Devonian, the Carboniferous period was 'The age of the amphibians' ...
Sistema Imunol gico de Aves e R pteis Marina de Oliveira Fernandez, Carlos Eug nio de Carvalho, J lio Avanzo, Jos M rio B. Ghellere, Idal cio R. Lima, Karin ...