Results 61 to 70 of about 7,015 (163)
Aptian angiosperm pollen from the Ticó Flora Patagonia, Argentina [PDF]
, 2013 Six angiosperm pollen types studied with SEM are recorded in the Cretaceous (early Aptian) Tico´ flora on the basis of material recovered from two localities: Anfiteatro de Tico´ and Bajo Tigre. Clavatipollenites dominates, with four types described. The
Archangelsky, Ana, Archangelsky, Sergio
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Evolving EarthPaleoclimate changes are commonly analyzed on three distinct scales: small-scale (20–500 kyr), linked to Milankovitch cycles; medium-scale events (∼30 Myr), associated with sea-level changes and tectonic activity; and large-scale (∼300 Myr), related to ...
Victor Matheus Joaquim Salgado-Campos +9 more
doaj +1 more source
Early Cretaceous sea surface temperature evolution in subtropical shallow seas
Scientific Reports, 2021 Late Cretaceous sea surface temperatures (SST) are, amongst others, traditionally reconstructed by compiling oxygen isotope records of planktonic foraminifera obtained from globally distributed pelagic IODP drill cores.
Stefan Huck, Ulrich Heimhofer
doaj +1 more source
The Anatomical Record, Volume 309, Issue 11, Page 3137-3168, November 2026.Abstract The Upper Cretaceous São José do Rio Preto Formation (Bauru Group, southeastern Brazil) has yielded a fragmentary but taxonomically diverse record of titanosaur sauropods, although elements from cervical series remain scarce. Here, we describe a nearly complete sauropod axis from the Vila Ventura Paleontological Area, representing an uncommon ...
Bruno A. Navarro +7 more
wiley +1 more source
Barremian-early Aptian charophyte biostratigraphy
, 2021 New Barremian-early Aptian charophyte biozonations are proposed here based on the charophyte succession in the Maestrat Basin (Iberian Chain, Spain). Biostratigraphic analysis distinguished two biozonations, European and Eurasian, which were compared to establish correlations.
Pérez Cano, Jordi +2 more
openaire +1 more source
Clathrate hydrate crystallization
The Canadian Journal of Chemical Engineering, Volume 104, Issue 11, Page 5931-5953, November 2026.Abstract Clathrate hydrate crystallization has been an area of interest to chemical engineers from the point of view of crystal structure, thermophysical properties, phase equilibria, kinetics, industrial applications, and environmental (climate change) implications.
Peter Englezos
wiley +1 more source
, 2007 Aptian; Albian; bivalves; Texas: Sonora: biostratigraphic; paleoecology ...
Robert W. Scott, ed.
core
Towards a standard ammonite zonation for the Aptian (Lower Cretaceous) of northern Mexico
Revista Mexicana de Ciencias Geológicas, 2018 Detailed data on twenty-seven species of ammonites identified in three stratigraphic sections of northern Mexico, allow further refinement of the Aptian ammonite biozonations of previous authors. Four formal ammonite biozones are proposed.
Ricardo Barragán-Manzo +1 more
doaj
Integrated stratigraphy of the Upper Barremian–Aptian sediments from the south-eastern Crimea
Geologica Carpathica, 2018 Previous studies made in different parts of the world have shown that Barremian–Aptian times imply many difficulties in deciphering the biostratigraphy, microfossil evolution and correlation of bioevents.
Karpuk Maria S. +6 more
doaj +1 more source
The Anatomical Record, Volume 309, Issue 10, Page 2752-2789, October 2026.Abstract The upper carbonate concretion levels of the Romualdo Formation (Aptian, Brazil) have yielded several theropod dinosaur remains, including spinosaurids and the coelurosaurs Santanaraptor placidus and Mirischia asymmetrica, the phylogenetic affinities of which are controversial.
Rafael Delcourt +4 more
wiley +1 more source