Montana, Idaho, Wyoming Table 1S: Miocene Marsupials and Insectivores in the Northern U.S. Rocky Mountains Faunal lists and age interpretations provided in Alroy (1999) and Janis et al. (1998) were cross-checked and augmented by field observations, primary literature, and unpublished data collected by ADB. Unpublished specimens used in this compilation are mainly from the Hepburn's Mesa (=Chalk Cliffs) area of Montana and the Railroad Canyon / Lemhi Valley region of the Idaho-Montana border and are housed in the University of California Museum of Paleontology and the Carnegie Museum of Natural History. Abbreviations: Ar - Arikareean; He - Hemingfordian; Ba - Barstovian. Subdivisions of Ar, He, and Ba follow Woodburne and Swisher*. Codes such as M18 in the Locality column are links to a database in the ADB lab. Shaded boxes show time periods in which various taxa are known. Dark shading (and black type in the locality column) indicates a locality within the mountains; light shading (and red type in the Locality column) indicates an area that is not within the mountains proper but within 200 km of the mountain front. All localities are within 200 km of the mountainous part of Wyoming, Montana, and Idaho. *Woodburne, M.O. and Swisher, C.C., III. Land mammal high-resolution geochronology, intercontinental overland dispersals, sea level, climate, and vicariance. In Geochronology, Time Scales and Global Stratigraphic Correlation, W.A. Berggren et al., Ed., (Society of Sedimentary Geology Special Pub. 54, 1995), pp. 336-364. TAXON Ar1 Ar2 Ar3 Ar4 He1 He Ba Ba2 Ba Locality             2&3 1   3   Marsupialia                     Didelphidae                     Peratherium 1 1               M18,21,22; M29-46,55-57;                     Low & Mid-Up Cabbage Patch Nanodelphys 1 1               M15-28, Lower Cabbage Patch                       Insectivora                     Soricidae                     Pseudotrimylus ["Trimylus"] sp. 1                 Lower Cabbage Patch Limnoceous infectus               1   CC-South Limnoceus sp.           1   1   W70, Split Rock; M63, Anceney Angustidens viereti               1   M63, Anceney Angustidens sp.               1   CC-South Paradomnina cf. Relictus               1   CC-South                       Erinacidae                     Stenoechinus tantulus   1               M29-57; Mid-Up Cabbage P. Parvercius montanus   1       1       M29-57; Mid-Up Cabbage P.                     W70, Split Rock Ocajila sp. 1 1               M15-28; M29-46,55-57;                     Low &Mid-Up Cabbage Patch Amphechinus horncloudi   1 1             M29-57; Mid-Up Cabbage P.                     L Van Tassel Brachyerix incertis               1   M63, Anceney Brachyerix macrotis           1       W70, Split Rock                       Proscalopidae                     Proscalops sp.   1               M29-57; Mid-Up Cabbage P. Proscalops cf. secundus 1                 Darton's Bluff Proscalops intermedius   1               Spring Creek 1 Mesoscalops montanensis             1     Spring Creek A5867-2 Mesoscalops scopelotemos           1       W70, Split Rock Mesoscalops sp. ["myeri"] unnamed but new               1   Hepburn's Mesa                       Talpidae                     Mystipterus new species               1   CC-South Mystipterus 1 1               M15-28; M29-46,55-57;                     Low & Mid-Up Cabbage Patch Domnina hutchisoni 1 1               M15-28; M29-46,55-57;                     Low &Mid-Up Cabbage Patch Domnina sp. 1 1 1             I64, Peterson Creek; M15-28;                     Tavenner Ranch Domninoides storeri [=valentinensis]               1   W2, North Pilgrim 2 Domninoides new species [='leptos']               1   M63, Anceney; CC-South Scalopoides sp.               1   W1, Cunningham Hill "? Talpa platybrachys"             1     Flint Creek Genus/species indeterminate           1     1 W70, Split Rock; Trail Creek Last Updated on 11/9/99 By A.D. Barnosky Email: barnosky@socrates.berkeley.edu