Whole-plant Concept and Environment Reconstruction of a Telemachus Conifer (voltziales) from the Triassic of Antarctica

نویسندگان

  • Benjamin Bomfleur
  • Anne-Laure Decombeix
  • Ignacio H. Escapa
  • Andrew B. Schwendemann
  • Brian Axsmith
چکیده

*Department of Ecology and Evolutionary Biology, University of Kansas, Lawrence, Kansas 66045, U.S.A., and Natural History Museum and Biodiversity Institute, University of Kansas, Lawrence, Kansas 66045, U.S.A.; yUniversité Montpellier 2, Unité Mixte de Recherche Botanique et Bioinformatique de l’Architecture des Plantes (UMR AMAP), Montpellier, F-34000, France, and Centre National de la Recherche Scientifique, UMR AMAP, Montpellier, F-34000, France; zConsejo Nacional de Investigaciones Cientı́ficas y Técnicas—Museo Paleontologico Egidio Feruglio, Trelew, Chubut 9100, Argentina; and §Department of Biological Sciences, LSCB 124, University of South Alabama, Mobile, Alabama 36688, U.S.A.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Morphological and functional stasis in mycorrhizal root nodules as exhibited by a Triassic conifer.

Mycorrhizal root nodules occur in the conifer families Araucariaceae, Podocarpaceae, and Sciadopityaceae. Although the fossil record of these families can be traced back into the early Mesozoic, the oldest fossil evidence of root nodules previously came from the Cretaceous. Here we report on cellularly preserved root nodules of the early conifer Notophytum from Middle Triassic permineralized pe...

متن کامل

Dinoflagellate cysts from the Upper Triassic (Rhaetian) strata of the Tabas Block, East - Central Iran

Rhaetian strata from the Nayband Formation of the Tabas block, East- Central Iran, were studied palynologically. The materialexamined contained moderately diverse and well-preserved dinoflagellate cyst assemblages which lead to the identification ofRhaetogonyaulax rhaetica Zone. The assigned age of this dinozone (Rhaetian) is justified by plant fossils such as Equisetitesarenaceus, Scytophyllum...

متن کامل

The Permian–Triassic boundary in Antarctica

The Permian ended with the largest of known mass extinctions in the history of life. This signal event has been difficult to recognize in Antarctic non-marine rocks, because the boundary with the Triassic is defined by marine fossils at a stratotype section in China. Late Permian leaves (Glossopteris) and roots Vertebraria), and Early Triassic leaves (Dicroidium) and vertebrates (Lystrosaurus) ...

متن کامل

Intermediate Production of Mono- and Diolein by an Immobilized Lipase from Candida antarctica

Lipase from Candida antarctica, fixed on macroporous acrylic resin, has been used for the intermediate production of mono- and diolein by hydrolysis of triolein. The effect of altering concentrations of triolein and glycerol and the function of the molecular sieve on the hydrolysis reaction of triolein were investigated. The highest hydrolysis yield was observed for the utmost concentration of ...

متن کامل

Aberrant Classopollis pollen reveals evidence for unreduced (2n) pollen in the conifer family Cheirolepidiaceae during the Triassic-Jurassic transition.

Polyploidy (or whole-genome doubling) is a key mechanism for plant speciation leading to new evolutionary lineages. Several lines of evidence show that most species among flowering plants had polyploidy ancestry, but it is virtually unknown for conifers. Here, we study variability in pollen tetrad morphology and the size of the conifer pollen type Classopollis extracted from sediments of the Tr...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2013