Hox clusters of the bichir (Actinopterygii, Polypterus senegalus) highlight unique patterns of sequence evolution in gnathostome phylogeny.
Raincrow JD, Dewar K, Stocsits C, Prohaska SJ, Amemiya CT, Stadler PF, Chiu CH. J Exp Zool B Mol Dev Evol. 2011 Sep 15; 316(6):451-64. Epub 2011 Jun 17.