Results 31 to 40 of about 30,339 (229)

Ecological succession of a Jurassic shallow-water ichthyosaur fall. [PDF]

, 2014
After the discovery of whale fall communities in modern oceans, it has been hypothesized that during the Mesozoic the carcasses of marine reptiles created similar habitats supporting long-lived and specialized animal communities.
A Glover, A Kaim, A Kaim, A Kaim, A Sheldon, C Bristow, C Clausen, C Gaillard, C Smith, C Smith, CE Braby, CR Smith, DL Distel, DM Martill, DM Martill, DM Martill, F Garcia-Pichel, F Garcia-Pichel, G Bianucci, H Astibia, HS Chafetz, J Taylor, JA Hogler, JA Hogler, JA Massare, JW Deming, K Amano, K Duff, K Olu-Le Roy, L Lundsten, LA Levin, M Hrs-Brenko, ME Jans, ME Williams, P Dando, PA Allison, PB Wignall, PD Taylor, R Bromley, R Motani, R Motani, R Riding, R Twitchett, R Vrijenhoek, RC Vrijenhoek, RS Shapiro, S Danise, S Danise, S Danise, S Danise, S Dominici, S Golubic, S Kiel, S Kiel, S Kiel, T Treude, V De Buffrenil, V Thiel, Z Lewy   +58 more
core   +3 more sources

Rectoprotomarssonella n. gen., a new agglutinated foraminiferal genus from the Upper Cretaceous of the Carpathian Flysch [PDF]

, 2007
The new agglutinated foraminiferal genus Rectoprotomarssonella n. gen. is characterized by its high trochospiral coiling with multiserial to uniserial chamber arrangement and solid, noncanaliculate wall with calcareous cement.
Bubík, M., Cetean, C.G., Kaminski, M.A.
core   +1 more source

The North Pacific Diatom Species Neodenticula seminae in the Modern and Holocene Sediments of the North Atlantic and Arctic

Geosciences, 2020
The paper presents micropaleontological information and observations of the North Pacific diatom species Neodenticula (N.) seminae (Simonsen and Kanaya) Akiba and Yanagisawa in the surface and Holocene sediments from the North Atlantic, Nordic, and ...
Alexander Matul, Galina Kh. Kazarina
doaj   +1 more source

The Bolivian Radiocarbon Database: A Countrywide Compilation of Radiocarbon Dates

Journal of Open Archaeology Data, 2023
The radiocarbon dating record from sites in the territory that comprises the Plurinational State of Bolivia has been previously included in datasets that are either obsolete, inaccurate, or incomplete.
José M. Capriles
doaj   +1 more source

Pliocene and Pleistocene chronostratigraphy and paleoenvironment of the Central Arctic Ocean, using deep water agglutinated foraminifera [PDF]

, 1998
Deep-water agglutinated foraminifera (DWAF) were studied from Cores PS2177-5, PS2200-5, PS2212-3 and PS2185-6; from the R/V POLARSTERN ARK-VIII/3 Cruise in the central Arctic Ocean.
Evans, J.R., Kaminski, M.A.
core   +1 more source

INTEMPERISMO DECORRENTE DA ACUMULAÇÃO DE SAL E A FORMAÇÃO DE ALVÉOLOS E TAFONI NOS AFLORAMENTOS DAS PRAIAS DE NITERÓI (RIO DE JANEIRO, BRASIL)

Revista Brasileira de Geomorfologia, 2013
Afloramentos de granitos e gnaisses nas praias de Niterói (RJ) apresentam morfologias desenvolvidas em decorrência do intemperismo da acumulação de sal na superfície da rocha.
Maria Augusta Martins da Silva, José Antônio Baptista Neto, André Luiz Carvalho da Silva, Bernard Smith, John McAlister, Patricia Warke, Joanne Curran   +6 more
doaj   +1 more source

Testate Amoeba Functional Traits and Their Use in Paleoecology

Frontiers in Ecology and Evolution, 2020
This review provides a synthesis of current knowledge on the morphological and functional traits of testate amoebae, a polyphyletic group of protists commonly used as proxies of past hydrological changes in paleoecological investigations from peatland ...
Katarzyna Marcisz, Vincent E. J. Jassey, Anush Kosakyan, Valentyna Krashevska, Daniel J. G. Lahr, Enrique Lara, Łukasz Lamentowicz, Mariusz Lamentowicz, Andrew Macumber, Andrew Macumber, Yuri Mazei, Yuri Mazei, Edward A. D. Mitchell, Edward A. D. Mitchell, Nawaf A. Nasser, R. Timothy Patterson, Helen M. Roe, David Singer, Andrey N. Tsyganov, Andrey N. Tsyganov, Bertrand Fournier   +20 more
doaj   +1 more source

Análisis palinológico preliminar de una turbera holocena del Apakará-tepui (Macizo de Chimantá, Guayana venezolana)

Collectanea Botanica, 2011
Análisis palinológico preliminar de una turbera holocena del Apakará-tepui (Macizo de Chimantá, Guayana venezolana).- Este artículo presenta los resultados palinológicos preliminares, a escala de milenios, de una secuencia holocena, desde 8.0 cal kyr BP ...
V. Rull, E. Montoya, S. Nogué, O. Huber
doaj   +1 more source

Collapse of the mammoth-steppe in central Yukon as revealed by ancient environmental DNA

Nature Communications, 2021
‘The timing and ecological dynamics of extinction in the late Pleistocene are not well understood. Here, the authors use sediment ancient DNA from permafrost cores to reconstruct the paleoecology of the central Yukon, finding a substantial turnover in ...
Tyler J. Murchie, Alistair J. Monteath, Matthew E. Mahony, George S. Long, Scott Cocker, Tara Sadoway, Emil Karpinski, Grant Zazula, Ross D. E. MacPhee, Duane Froese, Hendrik N. Poinar   +10 more
doaj   +1 more source

Sedimentary Ancient DNA (sedaDNA) Reveals Fungal Diversity and Environmental Drivers of Community Changes throughout the Holocene in the Present Boreal Lake Lielais Svētiņu (Eastern Latvia)

Microorganisms, 2021
Fungi are ecologically important in several ecosystem processes, yet their community composition, ecophysiological roles, and responses to changing environmental factors in historical sediments are rarely studied. Here we explored ancient fungal DNA from
Liisi Talas, Normunds Stivrins, Siim Veski, Leho Tedersoo, Veljo Kisand   +4 more
doaj   +1 more source