LITERATURE CITED
- Buchwitz , M. , Foth , C. , Kogan , I. and Voigt , S. 2012 . On the use of osteoderm features in a phylogenetic approach on the internal relationships of the Chroniosuchia (Tetrapoda: Reptiliomorpha) . Palaeontology , 55 : 623 – 640 .
- Clack , J. A. 2002 . Gaining Ground: The Origin and Evolution of Tetrapods , 369 Bloomington , Indiana : Indiana University Press .
- Hall , B. K. 2007 . Fins into Limbs: Evolution, Development and Transformation , 433 Chicago , Illinois : University of Chicago Press .
- Laurin , M. 2010 . How Vertebrates Left the Water , 199 Berkeley , , California : University of California Press .
- Modesto , S. P. , Smith , R. M. H. , Campione , N. S. E. and Reisz , R. R. 2011 . The last “pelycosaur”: a varanopid synapsid from the Pristerognathus Assemblage Zone, Middle Permian of South Africa . Naturwissenschaften , 98 : 1027 – 1034 .