Simpson, George Gaylord, editor
Why and how : some problems & methods in historical biology/ George Gaylord Simpson
Pergamon Press, 1980
Buku Teks
The encyclopedia of prehistoric life/ edited by Rodney Steel, Anthony P. Harvey
McGraw-HIll, 1979
Buku Teks
Raup, David M.
Principles of paleontology/David M. Raup, Steven M. Stanley
W.H. Freeman and Co., 1978
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Hussey, Russell C.
Historical geology : the geologic history of North America
McGraw-Hill, 1947
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The Encyclopedia of animal evolution / edited by R.J. Berry and A. Hallam
Facts on file, 1989
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