Results 31 to 40 of about 231,770 (260)

Burmese amber fossils bridge the gap in the Cretaceous record of polypod ferns [PDF]

open access: yes, 2016
publisher: Elsevier articletitle: Burmese amber fossils bridge the gap in the Cretaceous record of polypod ferns journaltitle: Perspectives in Plant Ecology, Evolution and Systematics articlelink: http://dx.doi.org/10.1016/j.ppees.2016.01.003 ...
Alexander R. Schmidt   +75 more
core   +1 more source

Reassessment of amber-bearing deposits of Provence, southeastern France

open access: yesBSGF - Earth Sciences Bulletin, 2021
The presence of “geological” amber (or “succin” in old French monographs) has been reported for several centuries in the Mesozoic deposits of Provence, southeastern France.
Saint Martin Jean-Paul   +9 more
doaj   +1 more source

A taxonomic and phylogenetic review of the anhanguerid pterosaur group Coloborhynchinae and the new clade Tropeognathinae [PDF]

open access: yesActa Palaeontologica Polonica, 2020
Anhanguerids are a particular group of pterodactyloid pterosaurs, characterized mainly by their rostral sagittal crests, well laterally expanded jaw tips and enlarged anterior teeth.
Borja Holgado, Rodrigo V. Pêgas
doaj   +1 more source

The Late- Cretaceous volcanic rocks from Talesh area (western Alborz): chemical variation, crystallization condition, hygrometry and tectonic setting [PDF]

open access: yesپترولوژی, 2020
In the Talesh area (western Alborz), a thick sedimentary- volcanic association formed in a littoral- deltaic environment during the Late Cretaceous. The extrusives comprise volcanoclastics (tuffs), lava flows (pillow and massive) and basic dykes.
Khadijeh Amani   +3 more
doaj   +1 more source

Výskyt spodnokriedových magmatických hornín medzi Podbrančom a Myjavou [PDF]

open access: yesGeologické práce. Správy, 2020
Occurrences of magmatic rocks were identifid north of the settlement Belanskovci (part of Myjava town), on the ridge of the elevation point 464 m a. s. l. east of the settlement Podzámok (part of the Podbranč village).
Tamás Csibri   +2 more
doaj  

The Permian to Cretaceous succession at Permpasset, Wollaston Forland: the northernmost Permian and Triassic in North–East Greenland

open access: yesGEUS Bulletin, 2021
Permian to Triassic outcrops in East Greenland diminish significantly northwards. Understanding the northward extent, and nature, of the Permian and Triassic successions has implications for regional palaeogeographic reconstructions and exploration in ...
Steven D. Andrews   +5 more
doaj   +1 more source

Morphometric Analysis of Dinosaur Tracks from Southwest Arkansas [PDF]

open access: yes, 2013
Dinosaur trackways were discovered in Cretaceous De Queen Limestone strata in Howard County, Arkansas, in June 2011. Multiple trackways with variably sized tridactyl tracks were exposed in a commercial quarry, suggesting multiple theropod species or ...
Boss, Stephen K., Shell, R.
core   +3 more sources

On the Cretaceous Dentaliidæ [PDF]

open access: yesQuarterly Journal of the Geological Society of London, 1878
I n this paper are described and grouped the shells of the family Dentaliidæ which have been obtained from the Cretaceous rocks of Great Britain. It includes all the forms I know of; but there may be in local museums and private collections specimens I have not seen. In the genus
openaire   +3 more sources

Osteology and relationships of Rhinopycnodus gabriellae gen. et sp. nov. (Pycnodontiformes) from the marine Late Cretaceous of Lebanon [PDF]

open access: yes, 2013
The osteology of Rhinopycnodus gabriellae gen. and sp. nov., a pycnodontiform fish from the marine Cenomanian (Late Cretaceous) of Lebanon, is studied in detail.
Capasso, Luigi, Taverne, Louis
core   +3 more sources

Comparative osteohistology of Hesperornis with reference to pygoscelid penguins: the effects of climate and behaviour on avian bone microstructure [PDF]

open access: yesRoyal Society Open Science, 2014
The broad biogeographic distribution of Hesperornis fossils in Late Cretaceous Western Interior Seaway deposits has prompted questions about whether they endured polar winters or migrated between mid- and high latitudes.
Laura E. Wilson, Karen Chin
doaj   +1 more source

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