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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Africa
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Madagascar
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Mahajanga Basin (3)
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Canada
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Western Canada
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fossils
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Primary terms
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Africa
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biogeography (2)
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Canada
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Western Canada
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lower Paleocene
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K-T boundary (2)
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upper Paleocene
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Chordata
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Vertebrata
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Mammalia
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Multituberculata (7)
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Artiodactyla (1)
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Insectivora
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Proteutheria (1)
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Notoungulata (1)
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Primates
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Prosimii
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Adapidae (1)
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Omomyidae (1)
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Rodentia (1)
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Tillodontia (1)
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Reptilia
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Archosauria
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dinosaurs (1)
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Europe (1)
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faults (1)
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Indian Ocean Islands
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Madagascar
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Mahajanga Basin (3)
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Invertebrata
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Mollusca (1)
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Mesozoic
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Cretaceous
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Upper Cretaceous
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Hell Creek Formation (1)
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K-T boundary (2)
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Maestrichtian (2)
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Maevarano Formation (3)
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Senonian (2)
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Jurassic
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Upper Jurassic (1)
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North America
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Great Plains (1)
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Rocky Mountains
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U. S. Rocky Mountains
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Bridger Range (1)
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Western Interior (1)
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Williston Basin (1)
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paleoclimatology (1)
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paleoecology (2)
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paleogeography (2)
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paleomagnetism (1)
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paleontology (8)
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palynomorphs (1)
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sedimentary rocks
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carbonate rocks
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limestone (1)
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clastic rocks
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sandstone (1)
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sedimentary structures
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planar bedding structures
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cross-stratification (1)
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South America
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Argentina
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Rio Negro Argentina (1)
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Patagonia (1)
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stratigraphy (2)
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United States
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Bighorn Basin (2)
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Montana
-
Bridger Range (1)
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Carter County Montana (1)
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Crazy Mountains Basin (2)
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Dawson County Montana (1)
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Gallatin County Montana (1)
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Park County Montana (1)
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Sweet Grass County Montana (1)
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U. S. Rocky Mountains
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Bridger Range (1)
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Washakie Basin (1)
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Wyoming (4)
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rock formations
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Fort Union Formation (3)
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sedimentary rocks
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sedimentary rocks
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carbonate rocks
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limestone (1)
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clastic rocks
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sandstone (1)
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sedimentary structures
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sedimentary structures
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planar bedding structures
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cross-stratification (1)
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Gondwanatheria and ?Multituberculata (Mammalia) from the Late Cretaceous of Madagascar
Stratigraphic Analysis of Upper Cretaceous Rocks in the Mahajanga Basin, Northwestern Madagascar: Implications for Ancient and Modern Faunas: A Reply
Stratigraphic Analysis of Upper Cretaceous Rocks in the Mahajanga Basin, Northwestern Madagascar: Implications for Ancient and Modern Faunas
Mammals and mollusks across the Cretaceous-Tertiary boundary from Makoshika State Park and vicinity (Williston Basin), Montana
Vucetichia (Gondwanatheria) is a junior synonym of Ferugliotherium (Multituberculata)
Systematic position of the Paulchoffatiinae (Multituberculata, Mammalia)
South America, Central America, the southeastern United States, Arctic Canada, Europe, Asia, and Africa all have been suggested as possible or probable biogeographic sources for taxa that appeared in the Western Interior of North America during the late Paleocene and early Eocene. Recent compilations of the geographic and temporal distributions of Paleocene and Eocene mammals and new data, derived primarily from recent collections from early Tiffanian (late Paleocene) quarries in the Crazy Mountains Basin of south-central Montana, permit tests of these hypotheses, particularly those involving a southern New World origin. Significant first appearances of mammalian higher taxa in the Western Interior occur in the earliest Tiffanian, late Tiffanian, earliest Oarkforkian, and earliest Wasatchian. Those that appear in the earliest Tiffanian probably were derived from late Torrejonian forms in the same region. It appears, therefore, that there was not a pronounced geographic shift in North American mammalian faunas across the Torrejonian-Tiffanian boundary as suggested in some southern New World origin hypotheses. It has been suggested that Palaeanodonta, Dinocerata, and Notoungulata (represented by Arctostylopidae), which appear in the late Tiffanian in the Western Interior, originated in South America, but the evidence is inconclusive and highly controversial. New higher taxa that appear in the Western Interior at the beginning of the Clarkforkian, particularly Rodentia and Tillodontia, probably originated in Asia and dispersed across Beringia. Most of the suprageneric taxa that first appear at the beginning of the Wasatchian in the Western Interior (Perissodactyla, Artiodactyla, Adapidae, Omomyidae, and Hyaenodontidae) also probably appeared in Asia and Europe at essentially the same time; there is no evidence for heterochrony. Recent paleontological discoveries and paleogeographic evidence suggest that the ultimate origins of some or all of these taxa lay in either Africa or the Indian subcontinent. The latter biogeographic source has not been seriously considered previously.
The decline and extinction of Plesiadapiformes (Mammalia; ?Primates) in North America; displacement or replacement?
Baiotomeus, a new ptilodontid multituberculate (Mammalia) from the middle Paleocene of western North America
Competitive exclusion and taxonomic displacement in the fossil record; the case of rodents and multituberculates in North America
Competitive exclusion and taxonomic displacement in the fossil record: The case of rodents and multituberculates in North America
Abstract Competitive displacement of one taxon by another in the fossil record may be indicated when: (1) an inverse correlation in diversity and, particularly, relative abundance can be demonstrated between the two groups through time; (2) aspects of their paleobiology suggest utilization of common resources; and (3) it can be shown that the two taxa evolved in allopatry prior to their sympatric association. Data from recent collections of Paleocene and Eocene mammals in the Western Interior of North America show marked inverse correlations both of generic diversity and relative abundance between multituberculates and rodents. The largest diminution in multituberculate diversity occurred in the latest Paleocene, near the Tiffanian-Clarkforkian boundary, not in the early Eocene as suggested previously. Reconstruction of diets, die1 activity patterns, locomotor habits, and body sizes of multituberculates and rodents suggests that both groups potentially utilized similar resources. The hypothesis that competitive exclusion may have played a role in the decline of multituberculates is strengthened by recent evidence that rodents evolved in Asia, immigrating to North America in latest Paleocene time. Evidence in support of alternative hypotheses employed to account for the decline and eventual extinction of multituberculates is wanting.