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检索条件"主题词=FOSSILS"
21839 条 记 录,以下是1-10 订阅
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The chemical removal of manganese dioxide coatings from fossil bones from the Cradle of Humankind, South Africa
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South African Journal of Science 2005年 第1期101卷 101-103页
作者: Cukrowska, E. M. ewa@aurum.wits.ac.za McCarthy, T. S. Pole, S. Backwell, L. Steininger, C. School of Chemistry University of the Witwatersrand Private Bag 3 WITS 2050 South Africa School of Geosciences University of the Witwatersrand Private Bag 3 WITS 2050 South Africa
Many fossil bones from the dolomitic caves in the Cradle of Humankind are covered by brownish-black coatings of manganese dioxide and smaller amounts of iron oxide. This obscures fine details on bone surfaces, making ... 详细信息
来源: EBSCOASC期刊 EBSCOASC期刊 ebsco(ASP/aph) 评论
Xenopus in Space and Time: FOSSILS, Node Calibrations, Tip-Dating, and Paleobiogeography
Cytogenetic and genome research
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Cytogenetic and genome research 2015年 第3期145卷 283-301页
作者: Cannatella, David Department of Integrative Biology and Biodiversity Collections University of Texas Austin Tex. USA
Published data from DNA sequences, morphology of 11 extant and 15 extinct frog taxa, and stratigraphic ranges of FOSSILS were integrated to open a window into the deep-time evolution of Xenopus. The ages and morpholog... 详细信息
来源: EBSCOASC期刊 EBSCOASC期刊 ebsco(ASP/aph) 评论
HIGHER-ORDER PHYLOGENETICS OF MODERN AVES BASED ON COMPARATIVE ANATOMY
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Netherlands Journal of Zoology 2001年 第2期51卷 179-205页
作者: Livezey, Bradley C. Zusi, Richard L. Carnegie Museum of Natural History Pittsburgh PA National Museum of Natural History Washington D.C. USA
New FOSSILS have contributed much to our knowledge of avian origins but have shed little light on higher-order relationships among modern Aves. This is because the primary focus of paleornithology, the discovery and d... 详细信息
来源: EBSCOASC期刊 EBSCOASC期刊 ebsco(ASP/aph) 评论
Ichnological analysis: a non-destructive tool in archaeology
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Lethaia 2010年 第4期43卷 587-590页
作者: RODRÍGUEZ-TOVAR, FRANCISCO J. fjrtovar@ugr.es MORGADO, ANTONIO LOZANO, JOSÉ A. Departamento de Estratigrafía y Paleontología Facultad de Ciencias Universidad de Granada 18002 Granada Spain. Departamento de Prehistoria y Arqueología Universidad de Granada 18071 Granada Spain
The article focuses on the use of ichnology in archeology. Since direct observations of samples can be made by non-destructive methods, ichnological features can be used for the analysis of archeological artefacts. Ar... 详细信息
来源: EBSCOASC期刊 EBSCOASC期刊 Wiley期刊 Wiley期刊 ebsco(ASP/aph) 评论
New catarrhine FOSSILS from Rudabánya (Hungary): Evidence for sympatric primates in a late Miocene swamp forest
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American journal of physical anthropology 2010年 64-64页
An abstract of the article "New catarrhine FOSSILS from Rudabánya (Hungary): Evidence for sympatric primates in a late Miocene swamp forest," by David R. Begun, Miriam C. Norgolwalla, and L ászl ó Kordos.
来源: EBSCOASC期刊 EBSCOASC期刊 评论
Giant sauropod tracks from the Middle-Late Jurassic of Zimbabwe in close association with theropod tracks
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Lethaia 2004年 第4期37卷 467-470页
作者: Ait-Kaci Ahmed, Ali Lingham-Soliar, Theagarten linghanst@ukzn.ac.za Broderick, Tim J. Geological Survey of Zimbabwe Causeway Zimbabwe. Department of Zoology Unviersity of KwaZulu-Natal South Africa. Makari Jenkinson Road Chisipite Zimbabwe
This article focuses on the discovery of dinosaur footprints from four different site. Eighty-eight tracks of large theropods were found, all apparently of the same ichnogenus. Forty-three of the theropod footprints a... 详细信息
来源: EBSCOASC期刊 EBSCOASC期刊 Wiley期刊 Wiley期刊 评论
Echinoderm faunas from the Lower Cretaceous (Aptian-Albian) of Alexander Island, Antarctica
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Palaeontology 2012年 第2期55卷 305-324页
作者: SMITH, ANDREW B. a.smith@nhm.ac.uk CRAME, J. ALISTAIR jacr@bas.ac.uk Department of Palaeontology The Natural History Museum Cromwell Road London SW75BD UK e-mail: British Antarctic Survey High Cross Madingley Road Cambridge CB3 0ET UK e-mail:
Strata assigned to the fossil Bluff Group on Alexander Island, Antarctica, contain Aptian to Albian high-latitude echinoderm faunas that lived at palaeolatitudes greater than 60 degrees south. The Pluto Glacier Format... 详细信息
来源: EBSCOASC期刊 EBSCOASC期刊 Wiley期刊 Wiley期刊 ebsco(ASP/aph) 评论
FOSSILS of early salamanders found
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Science News 2003年 第14期163卷 222页
作者: S.P
Newly discovered fossilized salamanders push back a milestone in amphibian evolution by more than 100 million years, paleontologists say. Volcanic ash smothered members of at least five previously unknown species of c... 详细信息
来源: EBSCOASC期刊 EBSCOASC期刊 过期西文期刊 评论
Blue beetle leads to technicolour FOSSILS
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New Scientist 2003年 第2407期179卷 17页
作者: Singer, Emily
The drab, grey world of FOSSILS could soon be awash with color. A 50-million-year-old brilliant blue beetle has given palaeontologists proof that they can determine the colors of a host of long-extinct species, includ... 详细信息
来源: EBSCOASC期刊 EBSCOASC期刊 评论
FIRST MILLION-YEAR-OLD GENOME
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New Scientist 2013年 第2948期220卷 26-27页
作者: Marshall, Michael
The article discusses the sequencing of ancient DNA. The oldest genome to be sequenced as of December 2013 came from a 700,000-year-old fossil from a horse. However, the publication that month of a genome sequenced fr... 详细信息
来源: EBSCOASC期刊 EBSCOASC期刊 评论