Bibliografia:
Madsen, J. H., Jr, and Stokes, W. L. (1963). New information on the Jurassic dinosaur Ceratosaurus. Geol. Soc. Am. Spec. Pap. 73: 90.
Madsen, J.H. (1973). On Skinning a Dinosaur. Curator. XVI (3): 225-266.
Madsen, J. H., Jr. (1974). A new theropod dinosaur from the Upper Jurassic of Utah. J. Paleontol. 48: 27-31.
Madsen, J.H. Jr. (1976a). Allosaurus fragilis: a revised osteology. Utah Geol. Mining Surv. Bull., 109: 1-163.
Madsen, J. H., Jr. (1976b). A second new theropod dinosaur from the Late Jurassic of East Central Utah. Utah Geol. 3: 51-60.
Madsen, J.H., Jr., McIntosh, J.S., and Berman, D.S. (1995) Skull and atlas-axis complex of the Upper Jurassic sauropod Camarasaurus Cope (Reptilia: Saurischia). Carnegie Museum Net. History Bull. 31, 1-115
Madsen Jr., J.H. and Welles, S.P. (2000). Ceratosaurus (Dinosauria, Theropoda), a revised osteology. Utah Geological Survey Miscellaneous Publications (MP-00-2): 80 p.
Yes, it's very sad to hear this. Madsen wrote two of the best osteological descriptions of a theropod dinosaur. His monographs on Allosaurus and Ceratosaurus are extremely useful and should be taken as examples for any future description of well-preserved theropods.
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