Results 51 to 60 of about 852 (169)

Recognition of fossil keratose sponges in carbonates using petrographic and machine‐learning classification

Sedimentology, Volume 73, Issue 6, Page 2246-2280, October 2026.
ABSTRACT Filamentous, anastomosing spar‐filled networks in Phanerozoic carbonates have been interpreted as the mineralised remains of keratose (non‐spiculate) sponges, yet their recognition remains contested because fabrics of broadly similar appearance may arise from microbial, diagenetic or physical processes. This study combines direct fossil–modern
Jeong‐Hyun Lee, Seung‐Sep Kim, Cui Luo   +2 more
wiley   +1 more source

The diverse bivalved arthropods of Castle Bank (Darriwilian, Ordovician), Wales

Papers in Palaeontology, Volume 12, Issue 5, September/October 2026.
Abstract The Darriwilian (Didymograptus murchisoni Biozone, Middle Ordovician) Castle Bank Lagerstätte, near Llandrindod, Wales (UK) hosts a diverse assemblage of marine animals, generally under 10 mm in size. Here we provide an overview of the diversity of bivalved arthropods from Castle Bank.
Stephen Pates, Joseph P. Botting, Macy W. Campbell, Lucy A. Muir   +3 more
wiley   +1 more source

Atractocybeloides, eine kleinwüchsige Trilobitengattung aus baltoskandischen Geschieben und ihrem Anstehenden [PDF]

Fossil Record, 2002
Aus mittel- bis oberordovizischen Geschieben werden fünf Taxa der kleinwüchsigen Trilobitengattung Atractocybeloides vorgestellt, davon die beiden neuen Arten Atractocybeloides nebeni n. sp. und Atractocybeloides oepiki n. sp.
H.-H. Krueger
doaj   +3 more sources

Fossils as cultural heritage: Scientific, commercial and legislative issues

Geology Today, Volume 42, Issue 5, Page 263-272, September/October 2026.
Fossils are among the principal sources for understanding the history of life through ‘Deep Time’ and can inform projections of biotic responses to environmental change. Despite a widespread recognition of the scientific, historical and communication significance of fossils in our culture, their role as part of our cultural heritage is still far from ...
Federico Fanti, Rosa Maria Di Maggio, Laurance Donnelly, Robert Fitzpatrick, Fábio Augusto da Silva Salvador, Duncan Pirrie   +5 more
wiley   +1 more source

Type Specimens of the Species of the Genus Papillicalymene (Arthropoda, Trilobita) from Ukraine Described by Leonid Konstantynenko

Zoodiversity
The article presents diagnoses and information on the type series of two trilobite species of the genus Papillicalymene Shirley, 1936: P. dnistroviana Konstantynenko, 2006 and P. sokoliana Konstantynenko, 2006 from the Ludlow (Upper Silurian) of Podillia
V. Dernov
doaj   +1 more source

Raman Line Scan Analyses and a New Hypothesis for the Formation of Anatase‐Hosting Microbialites: Study of the Stromatolites From Saint‐Jean‐de‐la‐Rivière, Cotentin, France

Journal of Raman Spectroscopy, Volume 57, Issue 8, Page 1463-1480, August 2026.
Micrometer analysis of millimeter lines of Raman spectra concludes in the association of anatase and graphitized organic matter (graphogen). The photosynthetic microorganisms at the origin of the microbialites produce O2, which is transformed by TiO2 into reactive species that, in turn, decompose the organic matter of the microorganisms. ABSTRACT Raman
Marie‐Paule Bassez
wiley   +1 more source

Paleomagnetic Constraints on the Separation of the Olongbuluke Block From the North China Block During the Late Cambrian–Middle Ordovician and Its Tectonic Significance

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract The collisional evolution of the micro‐blocks in the northeastern Tibetan Plateau is relatively well constrained. However, the reason why a fragment of the North China Block, the Olongbuluke Block, became separated from North China by the Central Qilian Block (a fragment of the South China Block) remains unclear.
Teng Wang, Yanan Zhou, Ruiyang Chai, Xin Cheng, Hanning Wu   +4 more
wiley   +1 more source

Trilobites

, 1988
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources

Evidence of Cheliped Autotomy and Regeneration in the Lower Miocene Crab Achelous monspeliensis From Portugal

Ecology and Evolution, Volume 16, Issue 7, July 2026.
Crab autotomy with evidence of regeneration is described for the first time in the fossil record. Autotomy is a defensive behavior that affects more males than females of Achelous monspeliensis and may be related to mating season. ABSTRACT Autotomy—the voluntary shedding of a limb as a defensive response to predation, intraspecific aggression, or ...
Carlos Neto de Carvalho, Pedro Marrecas
wiley   +1 more source

Cruziana traces from the Late Silurian (Pridoli) carbonate shelf of Saaremaa, Estonia [PDF]

Estonian Journal of Earth Sciences, 2014
Late Pridoli Cruziana traces have recently been found in carbonate shelf sediments of the Ohesaare Formation on Saaremaa Island, Estonia. Cruziana isp. is interpreted here as a locomotory trace (repichnia) of an arthropod, possibly a trilobite.
Olev Vinn
doaj   +1 more source