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ABSTRACT ALTHOUGH the occurrence of fossil mammals in North American Upper Cretaceous rocks has long been known1, only since the application in 1956 of new collecting techniques2 have large
samples of skeletal—especially dental—remains of Late Cretaceous mammals been recovered3. Important systematic studies have been based on these samples during the past decade. Maestrichtian.
(latest Cretaceous) assemblages from sites in New Mexico (W. Clemems, personal communication), Wyoming3, Montana4 and Alberta5 include several placental (Eutheria) orders, and many
multituberculates (Allotheria) and didelphoid marsupials (Metatheria). Assemblages of late Campanian age in Montana6 and Alberta (unpublished results) are nearly as rich in multituberculates
and marsupials, but are relatively poor in placentals, with only two orders (Insectivora and Deltatherida) represented. Access through your institution Buy or subscribe This is a preview of
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SKELETON OF _MIXODECTES_ REVEALS ARBOREALITY IN A LARGE PALEOCENE PRIMATOMORPHAN MAMMAL FOLLOWING THE CRETACEOUS-PALEOGENE MASS EXTINCTION Article Open access 11 March 2025 EARLIEST EVIDENCE
OF MARINE HABITAT USE BY MAMMALS Article Open access 13 May 2021 AN EXTRAORDINARY FOSSIL CAPTURES THE STRUGGLE FOR EXISTENCE DURING THE MESOZOIC Article Open access 18 July 2023 REFERENCES
* Van Valen, L., _Amer. Mus. Novit._, 2285, 1 (1967). Google Scholar * McKenna, M., _Curator_, 3, 221 (1962). Article MathSciNet Google Scholar * Clemens, W., _Univ. Calif. Publ. Geol.
Sci._, 48, 1 (1963); 62, 1 (1966). Google Scholar * Sloan, R., and Van Valen, L., _Science_, 148, 220 (1965). Article ADS CAS Google Scholar * Lillegraven, J., _thesis, Univ. Kansas_
(1968). * Sahni, A., thesis, Univ. Minnesota (1968). * Patterson, B., _Fieldiana: Geol._, 13, 1 (1956). Google Scholar * Slaughter, B., _Postilla_, 93, 1 (1965). Google Scholar *
Slaughter, B., _Texas J. Sci._, 20, 1 (1968). MathSciNet Google Scholar * Russell, L., and Landes, R., _Mem. Geol. Surv. Canada_, 223 (1940). * Williams, G., and Burk, C., in _Geological
History of Western Canada_ (edit. by McCrossan, R., and Glaister, R.), 169 (Alberta Soc. Petrol. Geol., Calgary, 1964). Google Scholar Download references AUTHOR INFORMATION AUTHORS AND
AFFILIATIONS * Departments of Geology and Zoology, University of Alberta, Edmonton, Alberta, Canada RICHARD C. Fox Authors * RICHARD C. Fox View author publications You can also search for
this author inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Fox, R. Early Campanian (Late Cretaceous) Mammals from Alberta,
Canada. _Nature_ 220, 1046 (1968). https://doi.org/10.1038/2201046a0 Download citation * Received: 21 October 1968 * Issue Date: 07 December 1968 * DOI: https://doi.org/10.1038/2201046a0
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