Results 61 to 70 of about 841 (169)

Putative Analogs of Pyrite Suns Forming in Proglacial Alaska Mudflats

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 5, May 2026.
Abstract Disc‐shaped pyrite suns of the Pennsylvanian age Anna Shale are thought to have formed where pressure restricted pyrite crystal growth to a flattened disc shape during diagenesis at the Anna Shale and the underlying Herrin coal boundary.
Heather L. Fair, Trinity L. Hamilton, Jeff R. Havig   +2 more
wiley   +1 more source

Affinity in Concentric Circles (ACC): A Geometric Representation of Dendrogram and Interpretation

Journal of Biogeography, Volume 53, Issue 5, May 2026.
ABSTRACT Aim We introduce “Affinity in Concentric Circles” (ACC), a method that converts dendrograms to a geometric form using similarity scores to compare dendrograms and identify affinity change patterns. Location China for trilobites and global for nisusiid brachiopods.
Yeongju Oh, Jikhan Jung, Tae‐Yoon Park, Dong‐Chan Lee   +3 more
wiley   +1 more source

Modelling Palaeodistributions in Marine Environments: A Review

Journal of Biogeography, Volume 53, Issue 5, May 2026.
ABSTRACT Aim This scoping review (ScR) synthesises the current literature on the application of Species Distribution Models (SDM) to past marine environments. We assess how these models have been used to reconstruct past environmental suitability, track biogeographical shifts and investigate long‐term ecological dynamics, while identifying key ...
Sarah Mathilde Salomé Beauvais, Emna Ben Lamine, Konstantina Agiadi, Maria Bas, Grégory Beaugrand, Tatiana Theodoropoulou, Virginie Raybaud   +6 more
wiley   +1 more source

An Increase in Animal Diversity was Facilitated by Ecologically‐Driven Brain Complexity Throughout the Cambrian

BioEssays, Volume 48, Issue 4, April 2026.
The Brain‐First Hypothesis suggests that the Cambrian transition from animals with simple body plans and simple brains to more complex animals was driven by a selection for brains with increased neural processing, following increased ecological complexity, and the networks underlying brain development were co‐opted to pattern other complex systems ...
Ariel D. Chipman
wiley   +1 more source

The Permian–Triassic transition in Türkiye: New insights and 3D outcrop models for accessible, reproducible and sustainable fieldwork

The Depositional Record, Volume 12, Issue 2, April 2026.
We studied the Permian–Triassic successions of south‐western Türkiye at five locations, synthesised sedimentological and palaeontological data, putting it into a consistent stratigraphic framework and incorporating 3D digital outcrop models. Abstract The Permian–Triassic transition is characterised by major environmental changes and the largest known ...
Baran Karapunar, Xia Wang, Stella Z. Buchwald, Anja B. Frank, Mónica Alejandra Gómez Correa, Müjde Gürsoy, Zhipeng Liu, Xuanni Xu, Lingzan Meng, Damla Demir, Erdal Koşun, Aymon Baud, William J. Foster   +12 more
wiley   +1 more source

The making of pure quartzose sand in continental interiors: Paraná River (Brazil and Argentina)

Sedimentology, Volume 73, Issue 3, Page 802-837, April 2026.
ABSTRACT As part of a comprehensive project on sedimentary processes in South America, this study focuses on sediment generation in the intracratonic Paraná Basin and monitors the evolution of sand composition along the Paraná River from central Brazil to the Río de la Plata estuary in Argentina.
Eduardo Garzanti, Marta Barbarano, Mara Limonta, Guido Pastore, Pieter Vermeesch, Giovanni Vezzoli   +5 more
wiley   +1 more source

CAMBRIAN CONODONTS ACROSS THE PRE-FURONGIAN TO FURONGIAN INTERVAL IN THE GSSP SECTION AT PAIBI, HUNAN, SOUTH CHINA

Rivista Italiana di Paleontologia e Stratigrafia, 2006
The conterminant base of the Furongian Series and Paibian Stage (Cambrian), as ratified in 2003, is in dark carbonate slope deposits of the Paibi section, Hunan, China, at the FAD of the agnostid trilobite Glyptagnostus reticulatus.
QI YU-PING, GABRIELLA BAGNOLI, WANG ZHI-HAO   +2 more
doaj   +1 more source

Ontogeny of the ptychopariid trilobite Kaotaia globosa from the Cambrian Kaili Biota of eastern Guizhou, China [PDF]

Swiss Journal of Palaeontology
The exceptional fossil record of trilobite ontogeny allows the elucidation of the developmental evolution of early arthropods. However, the paucity of detailed segmental growth data limits the understanding of growth dynamics during post-embryonic ...
Shengguang Chen, Dezhi Wang, Zhixin Sun, Zhengpeng Chen, Xinglian Yang, Fangchen Zhao   +5 more
doaj   +3 more sources

Vibrationally highly excited trilobite molecules stabilized by nonadiabatic coupling

Physical Review Research
We report on the observation of highly excited (ν∼100) vibrational states of a trilobite ultralong-range Rydberg molecule in ^{87}Rb. These states manifest spectroscopically in a regularly spaced series of peaks red-detuned from the 25f_{7/2 ...
Rohan Srikumar, Markus Exner, Richard Blättner, Peter Schmelcher, Matthew T. Eiles, Herwig Ott   +5 more
doaj   +1 more source

Moulting behaviour in the trilobite <i>Oryctocephalus indicus</i> (Reed, 1910) from the Cambrian Miaolingian Series (Wuliuan Stage) of Jianhe, South China. [PDF]

PeerJ, 2023
Chen S, Yang X, Liu X, Chen Z, Sun Z, Zhao F.   +5 more
europepmc   +1 more source