Results 151 to 160 of about 116,363 (312)

Dental crown morphological variation and heterodonty in carcharhiniform sharks

The Anatomical Record, EarlyView.
Abstract Elasmobranch teeth are highly mineralized structures that constitute the majority of the fossil record for this group. Despite their taxonomic and evolutionary significance, detailed descriptions of dental morphology remain scarce. The order Carcharhiniformes, the most diverse among sharks, comprises 304 valid species that display remarkable ...
Flávia Zanini, Karla D. A. Soares
wiley   +1 more source

Top abundant deep ocean heterotrophic bacteria can be retrieved by cultivation. [PDF]

ISME Commun, 2023
Sanz-Sáez I, Sánchez P, Salazar G, Sunagawa S, de Vargas C, Bowler C, Sullivan MB, Wincker P, Karsenti E, Pedrós-Alió C, Agustí S, Gojobori T, Duarte CM, Gasol JM, Sánchez O, Acinas SG.   +15 more
europepmc   +1 more source

A new species of Lonchidiidae (Hybodontiformes) from the Late Jurassic of Brazil (Aliança Formation, Jatobá Basin)

The Anatomical Record, EarlyView.
Abstract The Aliança Formation (Jatobá Basin) represents lacustrine deposits formed in oxygenated waters that hosted a diverse fauna, including Hybodontiform sharks. Within this group, the Family Lonchidiidae comprises 11 valid genera, with Parvodus previously reported in Brazilian deposits from the Brejo Santo Formation (Araripe Basin, Late Jurassic ...
Larissa de Souza Ribeiro, Marco Aurélio Gallo de França   +1 more
wiley   +1 more source

Nonlinear country-heterogenous impact of the Indian Ocean Dipole on global economies

Nature Communications
A positive Indian Ocean Dipole features an anomalously high west-minus-east sea surface temperature gradient along the equatorial Indian Ocean, affecting global extreme weathers.
Wenju Cai, Yi Liu, Xiaopei Lin, Ziguang Li, Ying Zhang, David Newth   +5 more
doaj   +1 more source

Earthquake-enhanced dissolved carbon cycles in ultra-deep ocean sediments. [PDF]

Nat Commun, 2023
Chu M, Bao R, Strasser M, Ikehara K, Everest J, Maeda L, Hochmuth K, Xu L, McNichol A, Bellanova P, Rasbury T, Kölling M, Riedinger N, Johnson J, Luo M, März C, Straub S, Jitsuno K, Brunet M, Cai Z, Cattaneo A, Hsiung K, Ishizawa T, Itaki T, Kanamatsu T, Keep M, Kioka A, McHugh C, Micallef A, Pandey D, Proust JN, Satoguchi Y, Sawyer D, Seibert C, Silver M, Virtasalo J, Wang Y, Wu TW, Wu TW, Zellers S.   +39 more
europepmc   +1 more source

The musculature and skeleton of the pelvic fin of the crocodile shark, Pseudocarcharias kamoharai (Matsubara, 1936) (Elasmobranchii: Lamniformes): Morphology and sexual dimorphism

The Anatomical Record, EarlyView.
This work brings new information on the sexual characteristics of the crocodile shark (Pseudocarcharias kamoharai) exploring the pelvic fin musculature, as well as the siphon sac and the musculature and skeleton of the clasper. Our paper is the first to point out clearly the sexual dimorphism related exclusively to the pelvic fin musculature in males ...
Laura F. Mianutti, Kenshu Shimada, João Paulo C. B. da Silva   +2 more
wiley   +1 more source

The development of deep-ocean anoxia in a comprehensive ocean phosphorus model. [PDF]

GEM, 2023
Donohue JG, Florio BJ, Fowler AC.
europepmc   +1 more source

Histological Characterization and Comparative Transcriptomic Analysis of Gonads During Early Sex Differentiation in the Northern Snakehead (Channa argus)

Animal Research and One Health, EarlyView.
This study delineates the early sex differentiation timeline in the northern snakehead (Channa argus). These findings provide a foundation for future sex‐control breeding in this economically important species. ABSTRACT The northern snakehead (Channa argus) is an economically important aquaculture species in China.
Chaonan Sun, Donglei Sun, Haishen Wen, Xin Qi, Chao Li, Xiaoyan Zhang, Yun Li   +6 more
wiley   +1 more source

Eddies Redistribute Ocean Warming Hotspots in the East Australian Current Southern Extension

Geophysical Research Letters
The East Australian Current (EAC) southern extension is one of the ocean warming hotspots under greenhouse warming, yet its underlying mechanism remains debated.
Xiaoqian Zhou, Dapeng Li, Zhao Jing, Lixin Wu, Wenju Cai, Zhi Li, Jiuxin Shi   +6 more
doaj   +1 more source

Prospecting of Architectural Features Using LiDAR‐UAV Technology, Deep Neural Networks and Visualization Techniques: A Case Study in Kuélap and Cambolín (NW Peru)

Archaeological Prospection, EarlyView.
ABSTRACT High‐resolution and accurate synoptic images of terrestrial topography, even in densely forested areas, have proven valuable for archaeology by enabling the identification and characterization of relief patterns associated with ancient human activities. This study presents a novel approach that integrates digital terrain models (DTMs) obtained
Jhon A. Zabaleta‐Santisteban, Rolando Salas López, Angel J. Medina‐Medina, Katerin M. Tuesta‐Trauco, Abner S. Rivera‐Fernandez, Nerci M. Noriega‐Salazar, José A. Sánchez‐Vega, Teodoro B. Silva‐Melendez, Marlen A. Grandez‐Alberca, Jhonsy O. Silva‐López, Nilton B. Rojas‐Briceño, Manuel Oliva‐Cruz, Alexander Cotrina‐Sanchez, Elgar Barboza   +13 more
wiley   +1 more source