Results 31 to 40 of about 359,043 (172)

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

On the heritability of geographic range sizes [PDF]

open access: yes, 2003
Within taxonomic groups, most species are restricted in their geographic range sizes, with only a few being widespread. The possibility that species-level selection on range sizes contributes to the characteristic form of such speciesrange size ...
Gaston, K.J., Webb, T.J.
core   +1 more source

Osteosclerosis in the extinct Cayaoa Bruneti (Aves, anseriformes) : insights on behavior and fligftlessness [PDF]

open access: yes, 2015
Fil: Mendoza, Ricardo de. División Paleontología Vertebrados. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La PlataFil: Tambussi, Claudia Patricia. Centro de Investigaciones en Ciencias de la Tierra (CICTERRA).
Berlepsch H.G.   +15 more
core   +1 more source

Responses of king penguin Aptenodytes patagonicus adults and chicks to two food-related odours [PDF]

open access: yes, 2016
Increasing evidence suggests that penguins are sensitive to dimethyl sulphide (DMS), a scented airborne compound that a variety of marine animals use to find productive areas of the ocean where prey is likely to be found.
Bonadonna, Francesco   +3 more
core   +2 more sources

Phylogenetic analysis of pelecaniformes (aves) based on osteological data: implications for waterbird phylogeny and fossil calibration studies.

open access: yesPLoS ONE, 2010
BackgroundDebate regarding the monophyly and relationships of the avian order Pelecaniformes represents a classic example of discord between morphological and molecular estimates of phylogeny.
Nathan D Smith
doaj   +1 more source

Scope & Sequence [PDF]

open access: yes, 2020
WELCOME to WINDOWS on the INQUIRY CLASSROOM! You have landed on a piece of a National Science Foundation Project (DUE 1245730) directed by Professor Chris Bauer, Chemistry Department, University of New Hampshire.
Bauer, Christopher F.
core   +1 more source

Restos de pingüinos del cenozoico medio de la Cordillera Patagónica [PDF]

open access: yes, 2013
Middle Cenozoic marine fossil-bearing beds crop out in the Cerro Plataforma (western Chubut Province, Argentina) at about 1,400 m a.s.l. They are located 500 km far from the modern Atlantic coast and only 50 km from the Pacific Ocean.
Acosta Hospitaleche, Carolina Ileana Alicia   +4 more
core   +2 more sources

The fossilized birth-death model for the analysis of stratigraphic range data under different speciation concepts [PDF]

open access: yes, 2018
A birth-death-sampling model gives rise to phylogenetic trees with samples from the past and the present. Interpreting "birth" as branching speciation, "death" as extinction, and "sampling" as fossil preservation and recovery, this model -- also referred
Drummond, Alexei   +5 more
core   +4 more sources

First bird remains from the Eocene of Algarrobo, central Chile Primeros restos de aves del Eoceno de Algarrobo, Chile central

open access: yesAndean Geology, 2012
Paleogene records of birds in the Eastern margin of the Pacific Ocean have increased in recent years, being almost exclusively restricted to fossil Sphenisciformes (penguins).
Roberto E Yury-Yáñez   +5 more
doaj   +1 more source

Have historical climate changes affected Gentoo penguin (Pygoscelis papua) populations in Antarctica?

open access: yesPLoS ONE, 2014
The West Antarctic Peninsula (WAP) has been suffering an increase in its atmospheric temperature during the last 50 years, mainly associated with global warming.
Fabiola Peña M   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy