Data files: g3fullec, g3noec, g3phylogeny - three topologies of species trees used in the paper g3genetrees - Genolevures 3 unrooted gene trees with branch lengths Software is included in ttbin.tgz. This file contains linux binaries and shell script for error correction and rootings. urec - extended version of urec 1.00 software tt - error correction and rootings smpnniheur.sh - a bash script for inferring optimal species tree (using urec and tt) Please read README included in this tarball for more details. Sources are available on request. Contact: gorecki@mimuw.edu.pl. Last update: 13 Oct 2010.