Fossil.

Vertebrate life Pough, F. Harvey 2002 Vertebrate life Pough, F. Harvey 1989 Vertebrate life William N. McFarland ... [et al.] 1985 Vertebrate life William N. McFarland ... [et al.] 1979 Vertebrate life McFarland, William N. 1979 Vertebrate palaeontology Benton, Michael J. 2005 Vertebrate paleontology Romer, Alfred Sherwood 1966 Vertebrate paleontology Romer, Alfred Sherwood 1945 Vertebrate paleontology Romer, Alfred Sherwood 1945 Vertebrate paleontology Romer, Alfred Sherwood 1933 Vertebrate Paleontology Romer, Alfred Sherwood 1974 Vertebrate paleontology Romer, Alfred Sherwood 1966 Walking with beasts Haines, Tim 2001 Warplanes of the future Gunston, Bill 1986