Results 11 to 20 of about 156,147 (279)

The Messel Pit: Window into a Greenhouse World [PDF]

open access: yesGeoconservation Research, 2021
Anthropogenic climate change may result, within 200 years, in warm and equable climatic conditions not experienced on Earth for tens of millions of years. Ancient ecosystems under such “greenhouse” conditions may be seen as natural experiments, and their
Krister Smith
doaj   +1 more source

Climate Change during Cretaceous/Paleogene as a Driving Force for the Evolutionary Radiation of Physical Dormancy in Fabaceae

open access: yesSeeds, 2023
Physical dormancy (PY) due to a water-impermeable seed/fruit coat is one of the characteristic features of many species of Fabaceae; however, the timing and context of the evolution of this trait are poorly understood.
Ganesh K. Jaganathan, Keith Berry
doaj   +1 more source

Insect frass in Baltic amber [PDF]

open access: yesBulletin of the Geological Society of Finland, 2008
Inclusions of wood debris loosened from pine-like trees are abundant in Baltic amber of Eocene and Oligocene age. The possibilities to find insect frass and excrement among wood debris are outlined and some examples are given.
M. Nuorteva, K.A. Kinnunen
doaj   +1 more source

Where are the Fossils of the First Galaxies? I. Local Volume Maps and Properties of the Undetected Dwarfs [PDF]

open access: yes, 2010
We present a new method for generating initial conditions for LCDM N-body simulations which provides the dynamical range necessary to follow the evolution and distribution of the fossils of the first galaxies on Local Volume, 5-10 Mpc, scales.
Babul   +60 more
core   +1 more source

Analisis Sisa Gajah Dari Kecamatan Tamban, Kabupaten Batola (Kalimantan Selatan): Suatu Pengumuman

open access: yesBerkala Arkeologi, 1989
Dalam tahun 1987 Pusat Penelitian Arkeologi Nasio­nal diminta untuk mengoreksi suatu temuan yang baru dilakukan oleh Bidang Permuseuman Sejarah dan Purba­kala Kantor Wilayah Departemen Pendidikan dan Kebu­dayaan Propinsi Kalimantan Selatan.
Rokus Due Awe
doaj   +1 more source

Teaching Paleontology [PDF]

open access: yes, 1995
This guide is designed to be used by teachers as an aid for teaching principles of fossils and past life to elementary school students. The activities and labs provided include topics such as fossilization, sedimentation, trace fossils, the importance of

core   +2 more sources

Fossil–Lagerstätten [PDF]

open access: yesGeology Today, 2008
Possibly every palaeontologist, before and after Charles Darwin, has been well aware that the fossil record is very incomplete. Only a tiny percentage of the plants and animals alive at any one time in the past get preserved as fossils, both in terms of numbers of individuals and in terms of numbers of species.
Nudds, J.R., Selden, P.A.
openaire   +2 more sources

The First Galaxies and the Likely Discovery of their Fossils in the Local Group [PDF]

open access: yes, 2009
In cold dark matter cosmologies, small mass halos outnumber larger mass halos at any redshift. However, the lower bound for the mass of a galaxy is unknown, as are the typical luminosity of the smallest galaxies and their numbers in the universe.
Ricotti, Massimo
core   +3 more sources

The palaeontological collection stored in the Department of Geology of the National Museum of Natural History NAS of Ukraine as a scientific heritage

open access: yesGeo&Bio, 2019
The palaeontological collection of the Geological Department of the National Museum of Natural History NAS of Ukraine (NMNH NASU) is among the most valuable objects of the national scientific and cultural heritage. The article presents a brief analytical
G. V. Anfimova   +3 more
doaj   +1 more source

Preservation of Arctic dinosaur remains from the Prince Creek Formation (Alaska, USA): A reply to Fiorillo (2016) [PDF]

open access: yesActa Palaeontologica Polonica, 2016
We thank Anthony Fiorillo (2016) for the concerns he raised regarding our characterizations of the Liscomb bonebed fossils in our paper describing Ugrunaaluk kuukpikenis from the Prince Creek Formation of Alaska, USA (Mori et al. 2016). We did not
Hirotsugu Mori   +2 more
doaj   +1 more source

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