نتایج جستجو برای: palaeobotany
تعداد نتایج: 50 فیلتر نتایج به سال:
—The independent acquisition of high-crowned cheek teeth (hypsodonty) in several ungulate lineages (e.g., camels, equids, rhinoceroses) in the early to middle Miocene of North America has classically been used as an indication that savanna vegetation spread during this time. Implicit in this interpretation is the untested assumption that hypsodonty was an evolutionary response to feeding in ope...
Fossil assemblages of chironomid larvae (non-biting midges) preserved in lake sediments are well-established paleothermometers in north-temperate and boreal regions, but their potential for temperature reconstruction in tropical regions has never before been assessed. In this study, we surveyed subfossil chironomid assemblages in the surface sediments of 65 lakes and permanent pools in southwes...
Premise of research: The Cenozoic fossil record is crucial for understanding the evolution of the remarkably high diversity of angiosperms. However, the quality and biases of the angiosperm fossil record remain unclear mainly due to the lack of a global database. Methodology: We introduce a new global occurrence-based database for Cenozoic angiosperm macrofossils, the Cenozoic Angiosperm Databa...
The history of life is punctuated by mass extinction events that devastated the biosphere, drawing to a close great lineages populated Earth. most severe these extinctions are known as ‘Big Five’ and each has captivated researchers across disparate fields. Studying Big Five crucial in helping us understand on Earth can also help predict how biosphere may respond anthropogenic climate crisis tod...
New PhytologistVolume 230, Issue 6 p. 2114-2116 ProfileFree Access Jennifer McElwain First published: 17 May 2021 https://doi.org/10.1111/nph.17318AboutSectionsPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text full-text accessPlease review our Terms and Conditions of Use check box below share version article.I have read accept the Wil...
(2946) Iris latifolia (Mill.) Voss, Vilm. Blumengärtn., ed. 3, 1: 982. 1895 (Xiphion latifolium Mill., Gard. Dict., 8: Xiphion No. 3. 16 Apr 1768) [Angiosp.: Irid.], nom. cons. prop. Typus: [icon] “Iris bulbosa flore diluto coeruleo” in Besler, Hort. Eystett. 2 (Classis Aestiva), Ord. 4, fol. 9, fig. 1. 1613. (H) Heer, Mioc. Balt. Fl.: 29. 15 Nov 1869 [Foss.], rej. non designatus. Due to an app...
The ‘One Hundred Important Questions Facing Plant Science Research’ project aimed to capture a global snapshot of the current issues and future questions facing plant science. This revisiting builds on original 2011 paper. Over 600 were collected from anyone interested in plants, which reduced final list 100 by four teams panellists. There was remarkable consensus most important topics between ...
Estimates of past precipitation are of broad interest for many areas of inquiry, including reconstructions of past environments and topography, climate modeling, and ocean circulation studies. The shapes and sizes of living leaves are highly sensitive to moisture conditions, and assemblages of fossil leaves of flowering plants have great potential as paleoprecipitation indicators. Most quantita...
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