Early mammalian radiations

SIGoGNEAu-RuSSELL, D., AND P. C. ENSOM. 1994. Decouverte, dans le Groupe de Purbeck (Berriasian, Angleterre), de plus ancien temoinage de 1'existence de mammiferes tribospheniques. Comptes Rendus de l'Academie des Sciences, Paris, 319:833-838.

SIGOGNEAu-RUSSELL, D., AND P C. ENSOM. 1998. Thereuodon (Theria, Symmetrodonta) from the Lower Cretaceous of North Africa and Europe, and a brief review of symmetrodonts. Cretaceous Research, 19: 1-26.

SIGOGNEAU-RUSSELL, D., AND P. GODEFROIT. 1997. A primitive docodont (Mammalia) from the Upper Triassic of France and the possible therian affinities of the order. Comptes Rendus de l'Academie des Sciences, 324:135-140.

SIGOGNEAU-RUSSELL, D., AND G. HAHN. 1995. Reassessment of the Late Triassic symmetrodont mammal Woutersia. Acta Palaeontologica Polonica, 40(3):245-260.

SIGOGNEAU-RUSSELL, D., D. D. DASHZEVEG, AND D. E. RUSSELL. 1992. Further data on Prokennalestes (Mammalia, Eutheria inc. sed.) from the Early Cretaceous of Mongolia. Zoologica Scripta, 21:205-209.

SIMMONS, N. B. 1993. Phylogeny of Multituberculata, p. 146-164. In F S. Szalay, M. J. Novacek, and M. C. McKenna (eds.), Mammal Phylogeny. Volume 1. Mesozoic Differentiation, Multituberculates, Monotremes, Early Therians, and Marsupials. Springer-Verlag, New York.

SIMPSON, G. G. 1925. Mesozoic Mammalia. 3. Preliminary comparison of Jurassic mammals except multituberculates. American Journal of Science, 10:559-569.

SIMPSON, G. G. 1928. A Catalogue of the Mesozoic Mammalia in the Geological Department of the British Museum. Trustees of the British Museum, London, 215 p.

SIMPSON, G. G. 1929a. American Mesozoic Mammalia. Memoirs of the Peabody Museum, 3(1):1-235.

SIMPSON, G. G. 1929b. The dentition of Ornithorhynchus as evidence of its affinities. American Museum Novitates, 390:1-15.

SIMPSON, G. G. 1937a. Skull structure of the Multituberculata. Bulletin of the American Museum of Natural History, 73:727-763.

SIMPSON, G. G. 1937b. The Fort Union of the Crazy Mountain Field, Montana and its mammalian faunas. United States National Museum, Bulletin. 169:1-287.

SIMPSON, G. G. 1944. Tempo and Mode of Evolution. Columbia University Press, New York, 237 p.

SIMPSON, G. G. 1945. The principles of classification and a classification of mammals. Bulletin of the American Museum of Natural History, 85:1-350.

SIMPSON, G. G. 1947. Haramiya, new name, replacing Microcleptes Simpson, 1928. Journal of Paleontology, 21:497.

SIMPSON, G. G. 1951. American Cretaceous insectivores. American Museum Novitates, 1541:1-19.

SIMPSON, G. G. 1959. Mesozoic mammals and the polyphyletic origin of mammals. Evolution, 13:405-414.

SIMPSON, G. G. 1960. Diagnosis of the classes Reptilia and Mammalia. Evolution, 14:388-391.

SLOAN, R. E., AND L. VAN VALEN. 1965. Cretaceous mammals from Montana. Science, 148:220-227.

SPRINGER, M. S., H. M. AMRINE, A. BURK, AND M. J. STANHOPE. 1999.

Additional support for Afrotheria and Paenungulata, the performance of mitochondrial versus nuclear genes, and the impact of data partitions with heterogeneous base composition. Systematic Biology, 48:65-75.