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Remarkably preserved annelid worms from the La Meseta Formation (Eocene), Seymour Island, Antarctica

Palaeontology, 2005
Abstract: Worm tubes, which exhibit the replaced tube‐lining membrane, have been collected from the lowermost Lower Eocene Acantilados Allomember of the La Meseta Formation, Seymour Island, Antarctica. The discovery represents the oldest examples of preservation of the tube‐lining membrane of tube‐dwelling Polychaeta in the fossil record.
Sérgio A Marenssi   +2 more
exaly   +2 more sources

Cannibalism in Naticidae from the La Meseta Formation (Eocene, Antarctica)

Antarctic Science, 2016
AbstractPolinices marambioensisis a naticid gastropod which is the most common constituent in fossil accumulations in the upper section of the Cucullaea I Allomember (Middle Eocene) of the La Meseta Formation in James Ross Basin, Antarctic Peninsula. This species was an important predator of infaunal bivalves and gastropods, including other naticids ...
Brezina, Soledad Silvana   +3 more
openaire   +2 more sources

Sharks from the La Meseta Formation (Eocene), Seymour Island, Antarctic Peninsula

Journal of Vertebrate Paleontology, 1992
ABSTRACT The marine waters of present-day Antarctica contain an exceedingly depauperate elasmobranch fauna. Recent investigations into the Eocene marine sediments of the La Meseta Formation of Seymour Island, Antarctic Peninsula yielded 13 fossil sharks new to the Antarctic region. Two, Stegostoma cf. S. fasciatum and Pseudoginglymostoma cf.
exaly   +2 more sources

Eocene microplankton from La Meseta Formation, northern Seymour Island

Antarctic Science, 1992
Twenty two samples collected from the Tertiary La Meseta Formation of Cape Wiman, Seymour Island, Antarctic Peninsula yielded abundant and moderately diverse assemblages of marine palynoflora, dominated by dinoflagellate cysts, together with acritarchs and chlorophyta.
Cocozza, Christopher D.   +1 more
openaire   +2 more sources

Conifer fossil woods from the La Meseta Formation (Eocene of Western Antarctica): Evidence of Podocarpaceae-dominated forests

open access: yesReview of Palaeobotany and Palynology, 2014
Abstract A new collection of 120 fossil wood samples from early Eocene sediments of the La Meseta Formation is studied. Conifers represent 68% of the total amount of wood samples. The specimens show significant conifer diversity and were placed in seven fossil-species. Samples are assigned to the Podocarpaceae, probably Cupressaceae and Araucariaceae.
Roberto R Pujana
exaly   +3 more sources

Stable carbon and oxygen isotope record in the Paleogene La Meseta Formation, Seymour Island, Antarctica

Antarctic Science, 1992
Stable carbon and oxygen isotopic relations have been analysed in brachiopod, gastropod, and bivalve fossils from the La Meseta Formation (Eocene-?early Oligocene), Seymour (Marambio) Island, West Antarctica. The results indicate a shift in δ13C by 6 permil beginning in the middle part of the Unit II of the formation. This shift may imply a change from
Andrzej Gaździcki   +6 more
openaire   +1 more source

Foraminifera from the Eocene La Meseta Formation of Isla Marambio (Seymour Island), Antarctic Peninsula

Antarctic Science, 2012
AbstractBenthic foraminiferal assemblages are described for the first time from the early Eocene of West Antarctica. They come from the lower member (Telm1) of the La Meseta Formation of Isla Marambio (Seymour Island). Two distinctive assemblages, dominated byNonionellina,Nonionella,Globocassidulina, andEilohedra, as well as byGlobocassidulina ...
Andrzej Gaździcki, Wojciech Majewski
openaire   +1 more source

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