Trying to crack the crested newt phylogeny – and failing

The four main groups of crested newt species differ in body shape. This morphological variation is correlated with ecological differences: sturdier newts are more terrestrial and slenderer newts more aquatic. This suggests that the differentiation in body shape drove their evolution and that gradually more and more slender newts evolved (by looking at related newts we can deduce that the ‘ancestral’ crested newt was stocky). Leer más.

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