1/11/2024 0 Comments Metasequoia le 2.4Transactions of the American Philosophical Society, New Series 40: 171–239.Ĭhaney, R.W. A revision of fossil Sequoia and Taxodium in western North America based on the recent discovery of Metasequoia. Natural History Magazine 47: 440–444.Ĭhaney, R.W. Proceedings of the National Academy of Sciences, USA 34: 503–515.Ĭhaney, R.W. The bearing of the living Metasequoia on problems of Tertiary paleobotany. Oregon State System of Higher Education, Condon Lectures, Eugene, Oregon.Ĭhaney, R.W. ![]() Geological Society of America, Bulletin 51: 469–488.Ĭhaney, R.W. Tertiary forests and continental history. Paleoecological interpretations of Cenozoic plants in western North America. Carnegie Institution of Washington, Publication 346: 45–138.Ĭhaney, R.W. Geology and paleontology of the Crooked River Basin, with special reference to the Bridge Creek flora. Carnegie Institution of Washington, Publication 349: 1–22.Ĭhaney, R.W. A comparative study of the Bridge Creek flora and the modern redwood forest. Palaeontographica, Abteilung B, Pälaophytologie 127: 1–142, pl. Fossil plants of the Tertiary Beaverhead basins in southwestern Montana. Early Tertiary vegetation of Arctic Canada and its relevance to paleoclimatic interpretation. ![]() Geological Survey of Canada, Bulletin 403: 39–65.īasinger, J.F., D.G. The fossil forests of the Buchanan Lake Formation (early Tertiary), Axel Heiberg Island, Canadian High Arctic: Preliminary floristics and paleoclimate. Journal of the Arnold Arboretum 64: 105–128.īasinger, J.F. Metasequoia glyptostroboides-Its present status in central China. ![]() glyptostroboides is endemic to a very restricted area in central China, and survival of the few remaining natural stands is doubtful unless new measures are taken to conserve the Mixed Mesophytic Forest as an entire community. ![]() Instead, the Mixed Mesophytic Forest apparently originated through various responses of individual species during the Eocene-Oligocene transition, including 1) extinction or extirpation, 2) pre-adaptation or evolution in place, 3) dispersal from higher elevations, or 4) dispersal from higher latitudes. Chaney postulated that the Oligocene deciduous forests such as Bridge Creek had reached the middle latitudes by the “migration” of an intact Arcto-Tertiary geoflora from the higher latitudes, but this concept is no longer well supported. Many of the North American fossils that had previously been assigned to Sequoia or Taxodium Richard were subsequently reassigned by Chaney to Metasequoia. glyptostroboides forest in China in 1948, and this had a major influence on his concepts about the composition and biogeographic history of North American fossil forests. Before the discovery of living Metasequoia glyptostroboides Hu et Cheng in China, the Bridge Creek fossils were identified as Sequoia Endlicher, which led to erroneous ecological and community composition interpretations of the Bridge Creek flora based upon comparisons with the modern redwood forest of California. The early Oligocene Bridge Creek flora of the John Day Formation in Oregon, USA, is an example of the broad-leaved deciduous vegetation that became widespread in the Northern Hemisphere following the Eocene-Oligocene climatic cooling, and demonstrates the significant participation of Metasequoia Miki in newly-developing communities analogous to the modern Mixed Mesophytic Forest of China.
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