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Journal of Morphology|September 1, 1982
Homology and causesL M Van Valen
Nature|September 18, 1980
The archaebacteria and eukaryotic originsL M Van Valen, V C Maiorana
Science (New York, N.Y.)|May 2, 1986
Gradual dinosaur extinction and simultaneous ungulate radiation in the hell creek formationR E Sloan, J K Rigby, L M VAN Valen, et al.
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