Additional file 3: of Phylogenetic mapping of scale nanostructure diversity in snakes

(Tonini_SnakesCommon.nwk) – The Newick tree file containing the 340 species analysed for models of character evolution, phylogenetic mapping and correlation among characters. The file was built by pruning the time-calibrated tree among 9754 species of squamates [20], keeping the 353 species for which we have obtained nanomorphological data, followed by removal of redundant subspecies. (NWK 14 kb)