Results 1 to 10 of about 156 (91)

New mammalian and avian records from the late Eocene La Meseta and Submeseta formations of Seymour Island, Antarctica [PDF]

open access: yesPeerJ, 2020
The middle–late Eocene of Antarctica was characterized by dramatic change as the continent became isolated from the other southern landmasses and the Antarctic Circumpolar Current formed.
Sarah N. Davis   +7 more
doaj   +3 more sources

The Early Origin of the Antarctic Marine Fauna and Its Evolutionary Implications. [PDF]

open access: yesPLoS ONE, 2014
The extensive Late Cretaceous - Early Paleogene sedimentary succession of Seymour Island, N.E. Antarctic Peninsula offers an unparalleled opportunity to examine the evolutionary origins of a modern polar marine fauna.
J Alistair Crame   +5 more
doaj   +2 more sources

Indigenous agglutinated foraminifera from the Eocene La Meseta Formation, Seymour Island, West Antarctica [PDF]

open access: yesPolish Polar Research, 2019
Here are reported the first certainly indigenous agglutinated foraminifera known for the Eocene La Meseta Formation on Seymour Island, West Antarctica. The specimens were identified as Textularia sp. and occur in the upper portion of the unit, just below
Victor C.S. Badaró
doaj   +1 more source

At the root of the early penguin neck: a study of the only two cervicodorsal spines recovered from the Eocene of Antarctica [PDF]

open access: yesPolar Research, 2014
The spinal column of early Antarctic penguins is poorly known, mainly due to the scarcity of articulated vertebrae in the fossil record. One of the most interesting segments of this part of the skeleton is the transitional series located at the root of ...
Piotr Jadwiszczak
doaj   +1 more source

Tafonomía del registro fósil de macromamíferos del Pleistoceno Superior en el nivel 4 de la Cueva de Prado Vargas (Cornejo, Burgos, España) [PDF]

open access: yesMunibe Antropologia-Arkeologia, 2020
Las técnicas de subsistencia en grupos humanos del pasado se investigan en profundidad a través del estudio de las acumulaciones fósiles, de su formación, origen y composición. Los conjuntos faunísticos localizados en los yacimientos arqueológicos pueden
Héctor de la Fuente   +3 more
doaj   +1 more source

THE SOUTHERNMOST OCCURRENCE OF BRACHYCARCHARIAS (LAMNIFORMES, ODONTASPIDIDAE) FROM THE EOCENE OF ANTARCTICA PROVIDES NEW INFORMATION ABOUT THE PALEOBIOGEOGRAPHY AND PALEOBIOLOGY OF PALEOGENE SAND TIGER SHARKS

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2018
The first record of one of the most common and widespread Paleogene selachians, the sand tiger shark Brachycarcharias, in the Ypresian strata of the La Meseta Formation, Seymour Island, Antarctica, is provided herein.
GIUSEPPE MARRAMÀ   +4 more
doaj   +1 more source

Weddellian marine/coastal vertebrates diversity from a basal horizon (Ypresian, Eocene) of the Cucullaea I Allomember, La Meseta formation, Seymour (Marambio) Island, Antarctica

open access: yesRevista Peruana de Biología, 2013
The La Meseta Formation crops out in Seymour/Marambio Island, Weddell Sea, northeast of the Antarctic Peninsula and contains one of the world's most diverse assemblages of Weddellian marine/coastal verte-brates of Early Eocene (Ypresian) age.
Marcelo A. Reguero   +2 more
doaj   +1 more source

La itinerancia de la corte de Castilla durante la primera mitad del siglo XV

open access: yesE-Spania, 2010
Ce travail vise à expliquer les différentes causes qui ont fait du centre de la Meseta le noyau politique et administratif de la couronne de Castille et León.
Francisco de Paula CAÑAS GÁLVEZ
doaj   +1 more source

La reforma de la division provincial en la meseta meridional (1800-1850)

open access: yesEstudios Geográficos, 1997
La reforma de la división provincial en la Meseta Meridional (1800-1850). La división provincial española actual tiene su origen en el cambio de régimen político que se produjo a lo largo de la primera mitad del siglo XIX. Como resultado de este complejo
Jesús Burgueño
doaj   +1 more source

An enigmatic fossil penguin from the Eocene of Antarctica

open access: yesPolar Research, 2017
Tarsometatarsi are key skeletal elements in penguin palaeontology. They constitute, among others, type specimens of all 10 widely accepted species of fossil penguins from the Eocene La Meseta Formation on Seymour Island (Graham Land, Antarctic Peninsula).
Piotr Jadwiszczak, Thomas Mörs
doaj   +1 more source

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