Results 61 to 70 of about 1,947,082 (272)

Cyclic Structure of the Lower-Middle Jurassic Sediments of the East Manych Trough and the Prikum Uplift System of the East Pre-caucasus Region

Georesursy
The paper presents the results of the analysis of the structure and composition of the terrigenous complex of the Lower-Middle Jurassic sediments of the East Manych Trough and the Prikum uplift system.
M. E. Voronin, A. N. Stafeev, V. Yu. Bliznyukov, R. S. Sautkin, A. V. Mordasova, R. M. Gilaev   +5 more
doaj   +1 more source

Features and favorable exploration direction of normal faults in Jurassic strata in northern central Sichuan Basin, China

Journal of Natural Gas Geoscience, 2023
Studies focusing on the fault system in the Jurassic strata of the Sichuan Basin have been limited, restricting the understanding of the hydrocarbon accumulation mode of the Shaximiao Formation and the expansion of exploration. Through interpretation and
Nan Su, Zhuxin Chen, Wei Yang, Lining Wang, Wenzheng Li, Chunlong Yang, Rong Li, Lu Zhang, Xueying Ma, Hao Zhang   +9 more
doaj   +1 more source

First evidence of a mandibular crest in Brasileodactylus Kellner, 1984 (Pterosauria, Pteranodontoidea, Anhangueridae), with comments on pterosaur headcrests

The Anatomical Record, EarlyView.
Abstract Brasileodactylus araripensis Kellner, 1984, is a toothed pterosaur from the Lower Cretaceous Romualdo Formation of the Araripe Basin, Brazil. Traditionally regarded as crestless, the species has been central to debates on anhanguerid taxonomy, as most members of the clade possess well‐developed sagittal cranial or dentary crests.
Anderson da Silva Nascimento, Rubi Vargas Pêgas, Alessandra Silveira Machado, Ricardo Tadeu Lopes, Fabiana Rodrigues Costa   +4 more
wiley   +1 more source

The Boundary Between Middle and Upper Jurassic [PDF]

Geological Magazine, 1956
The wisdom of placing the middle Jurassic-upper Jurassic boundary at the Callovian-Oxfordian line (rather than between the Bathonian and Callovian), as was done in Arkell9s recent book "Jurassic geology of the world" is questioned (by Melville) and reconfirmed (by Arkell).
openaire   +1 more source

Complex Late Triassic-Middle Jurassic Subduction-Related Magmatic History from Detritus of Nominal Middle Jurassic Brooks Range Ophiolite, Northern Alaska

, 2022
In northern Alaska, the Early Cretaceous sedimentary Yukon-Koyukuk basin documents the progressive unroofing of the adjacent Brooks Range orogen.
Fredriksson, Charlotte,, Charlotte Fredriksson, Victoria Pease, Pease, Victoria,   +3 more
core   +1 more source

Morphological plasticity in the dentition of the lungfish Gnathorhiza from the Permian of Brazil: A population‐level geometric morphometric analysis

The Anatomical Record, EarlyView.
Abstract Dental plates are pivotal in the lungfish paleontological record, constituting highly mineralized structures resilient to diagenetic processes. This study provides a detailed description and quantitative shape analysis of 95 newly discovered Gnathorhiza sp. dental plates from the Middle–Late Permian Corumbataí Formation, Brazil.
Mauro B. S. Lacerda, Gustavo H. N. Petreca, Gabriel E. B. de Barros, Ana Emilia Quezado, Marcelo A. Fernandes   +4 more
wiley   +1 more source

Systematics and environmental constrains of earliest brachyurans from the Bajocian, Middle Jurassic, of the north-eastern Iberian Peninsula [PDF]

Acta Palaeontologica Polonica
The origin of brachyurans or true crabs is elusive. Recent phylogenies and trace fossils point to a Triassic origin, which differs from the fossil record suggesting an Early Jurassic origin.
Fernando A. Ferratges, Beatriz Bádenas, Marcos Aurell, Jorge Colmenar, Samuel Zamora   +4 more
doaj   +1 more source

Bioerosion traces in bones reveal an increase in ethological diversity in the insect exploitation of carcasses in the late Triassic

The Anatomical Record, EarlyView.
Abstract This study presents the first detailed description of bioerosion traces produced by insects in bones from the Santa Cruz Sequence (early Carnian, Santa Maria Supersequence, Brazil). An array of traces is reported, consisting of notches, a tube, trails of grooves attributed to the ichnotaxon Osteocallis mandibulus and ornamented depressions ...
Lucca S. Cunha, Francesco Battista, Heitor Francischini   +2 more
wiley   +1 more source

Carrion ecology: concepts, interdisciplinary synthesis, and perspectives

Biological Reviews, EarlyView.
ABSTRACT Carrion is a ubiquitous resource in both terrestrial and aquatic ecosystems, yet it has long been overlooked in ecological research. Over the past two decades, studies on carrion and the many organisms that exploit it have flourished, revealing not only wide‐ranging ecological functions but also significance far beyond ecology.
Marcos Moleón, José A. Sánchez‐Zapata, Travis L. DeVault, Wayne M. Getz, Zebensui Morales‐Reyes, Daniel Redondo‐Gómez, Lara Naves‐Alegre, Solange A. Batista‐Nunes, Esther Sebastián‐González, Juan M. Pérez‐García, Kelly A. Waters, Thijs van Overveld, Craig Smith, Nuria Selva, Thomas A. Schlacher, Graeme Ruxton, Jesús Rodríguez, Martina‐M. Quaggiotto, Paula L. Perrig, Norman Owen‐Smith, Thomas M. Newsome, Isabel Navas, Yoshihiro Nakashima, Ana Mateos, Carlos Martínez‐Carrasco, Daniel Martín‐Vega, Berta Martín‐López, Antoni Margalida, Sergio A. Lambertucci, Adam Kane, Kevin Healy, Akane Hashizume, Antonio J. García‐Fernández, José A. Donázar, M. Eric Benbow, James C. Beasley, Philip S. Barton, Kathleen A. Alexander, Eneko Arrondo   +38 more
wiley   +1 more source

Late Jurassic selachians (Chondrichthyes, Elasmobranchii) from southern Germany: Re-evaluation on taxonomy and diversity [PDF]

, 2004
The record and taxonomy of Late Jurassic selachians from southern Germany is reviewed and discussed. The conservation lagerstätten of Nusplingen and the Solnhofen area are outstanding because they yielded numerous entire skeletons.
Klug, S, Kriwet, J, Kriwet, Jürgen, Klug, Stefanie, Klein, Stefanie   +4 more
core   +1 more source