Review of John Storer, Mammals of the Swift Current Creek Local Fauna (Eocene: Uintan, Saskatchewan)
Review of John Storer, Mammals of the Swift Current Creek Local Fauna (Eocene: Uintan, Saskatchewan)
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约翰·斯托勒 (John Storer) 的评论,《Swift Current Creek 当地动物群的哺乳动物》(始新世:萨斯喀彻温省 Uintan)
DOI:
10.1080/02724634.1985.10011862
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发表时间:
1985
影响因子:
1.4
通讯作者:
R. Stucky
中科院分区:
文献类型:
--
作者:
R. Stucky
Much new information regarding the mammalian faunas from the Uintan Land Mammal Age (middle to late Eocene, about 48.5 to 41 MYA) ofNorth America has accumulated since the synthetic review ofBlack and Dawson in 1966. Studies of Uintan faunas from California (Golz and Lillegraven, 1977), Texas (eg Wilson, 1974, 1984) and the Badwater area in Wyoming (eg Black, 1978; Dawson, 1980) have resulted in the recognition that mammalian faunas became increasingly more provincial through Uintan time, as more taxa became endemic to the Western, Southern and Central Rocky Mountain regions ofNorth America (Lillegraven, 1979); morphological differences between closely related taxa appear to have increased, as reflected by generic or specific distinctions, by the latter part of the Eocene. Importantly, this pattern of enhanced provinciality may have also occurred in Europe and Asia during the same time (see Russell et al., 1982; Li and Ting, 1983). Whether the evolution of Uintan provinciality is the result of the effects of geographic distance, time, floristic provinciality and/or ecological processes operating at the community level is an interesting puzzle that begs to be solved. Interesting aspects ofUintan faunal provinciality become even more pronounced with the publication of John Storer's monograph on the Swift Current Creek local fauna from the Cypress Hills Formation ofsouthem Saskatchewan, Canada. The Swift Current Creek local fauna, representing the northernmost occurrence in North America and only substantial occurrence in the Great Plains region of late Eocene mammals, was first reported by Russell and Wickenden in 1933. Fourteen taxa were originally described, including the first record oflagomorphs in the late Eocene. In 1965, Russell revised the fauna, correcting earlier identifications and reporting the occurrences ofadditional mammal species that added weight to the correlation ofthe fauna with others of Uintan age. Storer and his colleagues collected over 1000 specimens from the locality from 1976 to 1980, which brought the total number ofmammal species to 53. As a result of Storer's work, two new genera-Wallia (Insectivora, Proscalopidae) and Ibarus (Artiodactyla, Leptochoeridae)-and new species of Didelphodus, Thylacaelurus, Auxontodon, Microparamys, Pseudocylindrodon." Namatomys,"