Results 71 to 80 of about 27,326 (269)

A bristle‐nosed Jurassic ray‐finned fish (Actinopterygii) bears true dermal odontodes on its snout

Journal of Anatomy, EarlyView.
Teeth show extreme diversity, including tooth‐like dermal odontodes or “skin teeth” in many extant fishes. We describe the anatomy of enlarged tubercles on the snout of Redfieldius, an extinct early Jurassic fish. We found that the tubercles in Redfieldius are dermal odontodes that evolved independently from those of living species. Abstract Comparison
Jack Stack, Ben T. Kligman, Maranda L. Stricklin   +2 more
wiley   +1 more source

Hydrological Changes in Restricted Basins: Insights From Strontium Isotopes on Late Miocene‐Pliocene Connectivity of the Eastern Paratethys (Dacian Basin, Romania)

Geochemistry, Geophysics, Geosystems, 2021
The Dacian Basin was uniquely situated to record late Miocene hydrological changes that influenced depositional environments and faunal dispersal patterns in Central Eurasia's mega‐lake Paratethys.
Iuliana Vasiliev, Marius Stoica, Arjen Grothe, Sergei Lazarev, Dan Valentin Palcu, Christiaan vanBaak, Arjan DeLeeuw, Francesca Sangiorgi, Gert‐Jan Reichart, Gareth R. Davies, Wout Krijgsman   +10 more
doaj   +1 more source

Understanding marine biodiversity patterns and drivers: The fall of Icarus

Marine Ecology, EarlyView.
Abstract Biodiversity patterns are fundamental in our understanding of the distribution of life, ecosystem function, and conservation. In this concept analysis, A survey of the existing knowledge on marine biodiversity patterns and drivers across latitudes, longitudes, and depths indicates that none of the postulated patterns represent a rule.
Roberto Danovaro
wiley   +1 more source

Changes in the Early Holocene lacustrine environment inferred from the subfossil ostracod record in the Varangu section, northern Estonia [PDF]

Estonian Journal of Earth Sciences, 2010
The Varangu section is located on the southern slope of the Pandivere Upland in northern Estonia. A silty clay bed formed in the study area at 11 ;200–9300 ;cal ;yr ;BP, according to ostracod subfossils (e.g. Tonnacypris estonica, Leucocythere mirabilis,
Tõnu Meidla, Kadri Sohar
doaj   +1 more source

Palaeoenvironmental and diagenetic reconstruction of a closed-lacustrine carbonate system - the challenging marginal setting of the Miocene Ries Crater Lake (Germany) [PDF]

, 2017
Chemostratigraphic studies on lacustrine sedimentary sequences provide essential insights on past cyclic climatic events, on their repetition and prediction through time.
Abdul Aziz, Allan, Allan, Alonso-Zarza, Anadon, Anadón, Anderson, Andrews, Arp, Arp, Arp, Arp, Barnaby, Beier, Benito, Bennett, Brand, Buchner, Buchner, Budd, Böhme, Böhme, Börner, Chamberlain, Christ, Christ, Danielopol, Decrouy, Depeche, Dickson, Dravis, Dwyer, Einsele, Emrich, Flügel, Gentner, Gierlowski-Kordesch, Godet, Goldstein, Gouramanis, Grafenstein, Gray, Halley, Hays, Heaton, Holmes, Immenhauser, Immenhauser, Jankowski, Janz, Janz, Joachimski, Junge, Keatings, Kontrovitz, Kooij, Kwiecien, Leng, Leng, Li, Li, Lohmann, Lohmann, Mangili, Mangili, Marshall, Marshall, Mayr, Mazzini, Melezhik, Mischke, Mutti, Niemann, Oehlerich, Orszag-Sperber, Pache, Pohl, Prieto, Richter, Richter, Riding, Romanek, Rothe, Sanz, Schwarz, Sheppard, Stansell, Staudacher, Stevens, Swart, Talbot, Tütken, Vasconcelos, Wilson, Wittkop, Xia   +95 more
core   +1 more source

Late Ordovician Ostracodes from Sardinia and Perigondwanan Ostracode Palaeobiogeography

, 2007
A Late Ordovician ostracode fauna from Sardinia comprises more than 45 species of beyrichiocopes and podocopes. There is a total of 13 named new species of the genera Grammolomatella, Pseudulrichia, Antiaechmina, Postceratia, Arpaschmidtella, Bairdiocypridella, Prorectella, Dornbuschia, Velapezoides, Bairdia as well as of the new genus Sardicornina ...
SCHALLREUTER R., HINZ SCHALLREUTER I., FERRETTI, Annalisa, SERPAGLI, Enrico   +3 more
openaire   +2 more sources

The Greenland–Scotland Ridge in a Changing Ocean: Time to Act?

Marine Ecology, EarlyView.
ABSTRACT The Greenland–Scotland Ridge is a submarine mountain that rises up to 500 m below the sea surface and extends from the east coast of Greenland to the continental shelf of Iceland and across the Faroe Islands to Scotland. The ridge not only separates deeper ocean basins on either side, that is, the North Atlantic and Arctic oceans, but also ...
Christophe Pampoulie, Saskia Brix, Haseeb S. Randhawa   +2 more
wiley   +1 more source

Ecological training set of freshwater ostracods in Canadian and Siberian periglacial regions [PDF]

, 2008
Quantified palaeoenvironmental reconstructions are essential to estimate the impact of future climate changes on ecosystems. Based on faunistic data from regional multireference sites and limnological surveys, ecological training sets can be used to ...
Pienitz, R., Schirrmeister, Lutz, Viehberg, F. A., Wetterich, Sebastian   +3 more
core  

Reconstructions of deltaic environments from Holocene palynological records in the Volga delta, northern Caspian Sea [PDF]

, 2014
This article was made available through open access by the Brunel Open Access Publishing Fund.New palynological and ostracod data are presented from the Holocene Volga delta, obtained from short cores and surface samples collected in the Damchik region ...
Abdullayev NR, Abreu V, Baganz OW, Baltes N, Belevich EF, Belevich EF, Belevich EF, Bohacs KM, Bolikhovskaya NS, Bolikhovskaya NS, Bowman AP, Bowman AP, Corradini D, Ferronsky VI, Kaplin P, Kroonenberg SB, Labutina IA, Lewis J, Lychagin MY, Mayev EG, Müller K, Nikolayev VA, Reynolds AD, Reynolds AD, Rochon A, Rusakov GV, Spidchenko AN, van Geel B   +27 more
core   +2 more sources

Confirmation of the impact origin of the Late Ordovician Tvären impact structure (southeast Sweden) and emplacement of impactites in a marine setting

Meteoritics &Planetary Science, EarlyView.
Abstract The Tvären structure in southeastern Sweden has been listed as a confirmed marine‐target impact structure for decades. However, to date, no measurements and/or indexed data of planar deformation features in quartz grains from the structure have been published or any other unequivocal evidence of impact.
Katarzyna J. Gajewska, Sanna Alwmark, Mikael Calner, Sylvain Richoz, Jens Ormö, Erik Sturkell, Carl Alwmark   +6 more
wiley   +1 more source