Results 81 to 90 of about 35,431 (277)

Petrographic and geochemical evidence for determining the provenance of the Nari Formation, Pakistan

Geofísica Internacional
The geochemical and petrographic characteristics of the Nari Formation (NF) have been thoroughly examined at the Haji Haroon section in the Lower Indus Basin (LIB), located in the Northern Laki Range, approximately 20 kilometres south of Therhi village ...
Muhammad Paryal, Aftab Ali Panhwar, Zhong Jianhua, M.H. Agheem, Gulfam Hussain, Chander Pirkash, Rizwan Ali Shar, Irfan Ali Siyal   +7 more
doaj   +1 more source

Forensic Hydraulic Analysis of Floodplain Connectivity Driven by Historical Beaver Dams in Colorado Headwater Streams

River Research and Applications, EarlyView.
ABSTRACT As ecosystem engineers, beavers (Castor canadensis) modify river corridor form through dam building. When beavers are removed from a river corridor, their unmaintained dams wash out, altering the stream's hydrologic regime. The assumption that beaver dams increase floodplain connectivity is frequently presumed but has not been directly ...
Kayla Schultz, Ryan R. Morrison, Sara Rathburn, Connor Mertz, Nicholas Christensen   +4 more
wiley   +1 more source

Oligocene Canidae

Memoirs of the Carnegie Museum, 1902
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources

Mainland diversification and recent island lineages in the reduviid genus Tapirocoris: an integrative taxonomic framework with four new species

Insect Science, EarlyView.
Using an integrative taxonomic framework that combines COI DNA barcodes, geometric morphometrics and phylogeography, we revise the assassin bug genus Tapirocoris and recover seven well‐supported species, including four newly described cryptic species.
Ping Zhao, Qinpeng Liu, Minmin Ou, Huaiyu Liu, Yingqi Liu, Jianyun Wang, Miao Yang, Zhuo Chen, Wanzhi Cai   +8 more
wiley   +1 more source

Body Size Regulates Niche Overlap Asymmetry in the Subtropical Andes Rain Shadow: Isotopic Paleoecology of Oligocene South American Ungulates

Integrative Zoology, EarlyView.
This study provides the first isotopic analysis of Oligocene mammals from Quebrada Fiera, Mendoza, Argentina, filling a major gap in South American paleontology. It reveals a latitudinal gradient in aridity due to the Andean rain shadow and highlights the role of (semi)permanent water bodies in sustaining diverse herbivore communities. Additionally, it
Dánae Sanz‐Pérez, Santiago Hernández Del Pino, Esperanza Cerdeño, Manuel Hernández Fernández, Laura Domingo   +4 more
wiley   +1 more source

Coexistence of Oligocene toothed and baleen-assisted mysticetes in the northwestern Pacific [PDF]

Fossil Record
Oligocene mysticetes display an unparalleled diversity and morphological disparity in the evolutionary history of Mysticeti. However, their paleoecological aspects, such as the patterns of coexistence of different morphotypes, remain poorly explored ...
Cheng-Hsiu Tsai, Toshiyuki Kimura, Yoshikazu Hasegawa   +2 more
doaj   +3 more sources

Review of the Oligocene Cetacea

Systematic Zoology, 1976
Whitmore, F. C., Jr., and Sanders, A. E. (U.S. Geological Survey, National Museum of Natural History, Washington, D.C. 20244 and The Charleston Museum, 121 Rutledge Avenue, Charleston, South Carolina 29401). 1976. Review of the Oligocene Cetacea. Syst. Zool.
Whitmore, Frank C, Jr., Sanders, Albert E   +1 more
openaire   +2 more sources

Review and revision of Cenozoic tropical planktonic foraminiferal biostratigraphy and calibration to the Geomagnetic Polarity and Astronomical Time Scale [PDF]

, 2010
Planktonic foraminifera are widely utilized for the biostratigraphy of Cretaceous and Cenozoic marine sediments and are a fundamental component of Cenozoic chronostratigraphy.
Heiko Pälike, Berggren, William A., Bridget S. Wade, Pearson, Paul N., Pälike, Heiko, Paul N. Pearson, Wade, Bridget S., William A. Berggren, Pearson, Paul Nicholas   +8 more
core   +1 more source

Unravelling the phylogeny of armadillos and their kin (Mammalia, Xenarthra, Cingulata) combining morphological, molecular, and stratigraphic data

Cladistics, EarlyView.
Abstract Cingulata, a major lineage of Xenarthra, comprises extinct and extant armoured placental mammals that diversified throughout the Cenozoic. Despite extensive study, phylogenetic hypotheses based on morphological and molecular data remain incongruent, and no total evidence analysis has been conducted. Here, we integrate the largest morphological
Daniel M. Casali, Mariela C. Castro, Martin R. Ciancio, Timothy J. Gaudin, Jeremy L. Bramblett, Alberto Boscaini, Fernando A. Perini, Max C. Langer   +7 more
wiley   +1 more source

Oligocene archaeomonad stomatocysts from the Polish Central Paratethys

Acta Palaeontologica Polonica
An unanticipated diversity of archaeomonad stomatocysts intermixed with marine plankton including diatoms, silicoflagellates, parmaleans and individual siliceous protistan scales was encountered in Rupelian diatomites from the Central Paratethys. In this
Irena Kaczmarska, James M. Ehrman, Brajogopal Samanta   +2 more
doaj   +1 more source