Results 81 to 90 of about 406,782 (305)

Re‐evaluation of a soft crested Edmontosaurin, with implications for hadrosaurid life appearance and diversity

The Anatomical Record, EarlyView.
Abstract Hadrosaurid dinosaurs are generally regarded as “crested” or “non‐crested” depending on the presence or absence of a bony cranial crest. At least one supposedly “non‐crested” hadrosaur is known to have possessed a soft tissue cranial crest (or comb), based on an exceptionally preserved “mummified” specimen. Here we redescribe this specimen and
Henry S. Sharpe, Phil R. Bell, Ian Baylatry, Robin Sissons, Corwin Sullivan   +4 more
wiley   +1 more source

Elemental and isotopic composition of river water during a flood event in agricultural watershed: insight of sources and pathways of water and terrestrial derived matter [PDF]

, 2012
Flood event in agricultural watershed represents 64% of water discharge but up to 71% of dissolved organic carbon and 94 of total suspended matter export.
El Azzi, Désirée, Guiresse, Agnès Maritchù, Lambs, Luc, Moussa, Issam, Probst, Jean-Luc, Teisserenc, Roman   +5 more
core  

Hydrologic controls on seasonal and inter-annual variability of Congo River particulate organic matter source and reservoir age [PDF]

, 2017
We present dissolved organic carbon (DOC) concentrations, particulate organic matter (POM) composition (δ13C, δ15N, ∆14C, N/C), and particulate glycerol dialkyl glycerol tetraether (GDGT) distributions from a 34-month time-series near the mouth of the ...
Dinga, Bienvenu Jean, Eglinton, Timothy I., Galy, Valier V., Hemingway, Jordon D., McIntyre, Cameron, Schefuß, Enno, Spencer, Robert G.M.   +6 more
core   +1 more source

The cranial, mandibular, and hyoid anatomy of softshell turtles (Trionychidae): A revised character list for phylogenetic analysis

The Anatomical Record, EarlyView.
Abstract Softshell turtles (Pan‐Trionychidae) are an early branching clade of hidden‐necked turtles (Cryptodira) with a rich fossil record extending back to the Early Cretaceous. The evolutionary history of softshell turtles is still unresolved because of their conservative morphology combined with high levels of polymorphism related to morphological ...
Léa C. Girard, Walter G. Joyce
wiley   +1 more source

The influence of the hydrologic cycle on the extent of sea ice with climatic implications [PDF]

Multi-temporal satellite images, field observations, and field measurements were used to investigate the mechanisms by which sea ice melts offshore from the Mackenzie River delta.
Dean, Kenneson G., Searcy, Craig, Stringer, William J.   +2 more
core   +4 more sources

MEMORANDUM: Calibration of Great Bay Estuary Hydrodynamic Model and Incremental Nitrogen Estimation [PDF]

, 2013
This technical memorandum summarizes the completion of the calibration of a hydrodynamic model of the Great Bay Estuary System (GBES) originally started as part of the Squamscott River modeling study.
Gallagher, Thomas W., Mancilla, Cristhian   +1 more
core   +2 more sources

Hepatic morphology and serum biochemical profile according to dry and rainy seasons in Pygocentrus nattereri (Characiformes: Serrasalmidae)

The Anatomical Record, EarlyView.
Abstract This study investigated the physiological and morphological adaptations of the liver of the carnivorous fish Pygocentrus nattereri (piranha) in response to seasonal variations (dry and rainy seasons) in the Brazilian Pantanal. The objective was to describe how the liver, a central organ in metabolic regulation, responds to environmental ...
Maria Eduarda Corona Garcia, Sandriely F. Marcondes, Mayara S. Siqueira, Taynara R. F. Leão, Robson A. Rodrigues, Karine N. N. Farias, André L. N. Silva, Karin Virgínia Kuibida, Lilian Franco‐Belussi, Carlos E. Fernandes   +9 more
wiley   +1 more source

Examining the 2022 drought event in the past and future discharge changes of the Upper Jialing River from a tree-ring perspective

Journal of Hydrology: Regional Studies
Study Region: The Jialing River, distinguished as the largest tributary of the Yangtze River by watershed area Study Focus: In the context of a major drought in the Yangtze River Basin in 2022, this study examines the extent of low discharge in its ...
Youping Chen, Yilin Ran, Feng Chen, Shijie Wang, Mao Hu, Tiyuan Hou, Xiaoen Zhao, Weipeng Yue, Heli Zhang   +8 more
doaj   +1 more source

Widespread decline in hydrological monitoring threatens Pan‐Arctic Research [PDF]

, 2002
Operational river discharge monitoring is declining in both North America and Eurasia. This problem is especially severe in the Far East of Siberia and the province of Ontario, where 73% and 67% of river gauges were closed between 1986 and 1999 ...
Lammers, Richard B., Shiklomanov, Alexander I., Vorosmarty, Charles J.   +2 more
core   +2 more sources

MicroCT reinvestigation of the only articulated fossil anostomid fish reveals synonymy of Arhinolemur Ameghino, 1898 and Megaleporinus Ramirez et al., 2017

The Anatomical Record, EarlyView.
Abstract Arhinolemur scalabrinii† Ameghino, 1898 was originally described as a strepsirrhine primate (Mammalia) but has been recognized as an anostomid fish since 2012. It remains the only extinct anostomid species known from complete cranial material.
Karen M. Panzeri, Humberto L. Andrelino, Sergio Bogan, José P. O'Gorman, Federico Agnolín, Brian L. Sidlauskas, Nahuel Vega, Agustín G. Martinelli, José L. Birindelli   +8 more
wiley   +1 more source