Results 161 to 170 of about 34,047 (207)

Charnia and other late Ediacaran macrofossils preserved in turbiditic deposits of the Indreelva Member (Finnmark, Norway)

open access: yesPalaeontology, Volume 69, Issue 5, September/October 2026.
Abstract The fossil genus Charnia is emblematic of the evolutionary expansion of metazoans during the late Ediacaran. The first discovery of Charnia specimens from Scandinavia is here reported, alongside new examples of Palaeopascichnus, Aspidella‐type holdfasts, and possible scratch circles.
Yorick P. Veenma   +8 more
wiley   +1 more source

Dynamic evolution and hierarchical regulation of rDNA in polyploid oat

open access: yesThe Plant Journal, Volume 127, Issue 6, September 2026.
SUMMARY Ribosomal DNA (rDNA) encodes the RNA core of ribosomes, yet it remains one of the least understood components of eukaryotic genomes, particularly in complex polyploids. Here, we present a comprehensive analysis of rDNA organization, evolution, and transcription across the Avena genus. We show that rDNA copy number varies extensively across loci
Ziyang Wan   +6 more
wiley   +1 more source

Corundum Discovered by SuperCam and the Perseverance Rover at Jezero Crater, Mars

open access: yesGeophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract Mars is primarily composed of mafic mineral assemblages and their alteration products, but small, scattered rocks strewn across the landscape offer clues to greater petrological diversity. While traversing the Jezero crater rim, the Perseverance rover encountered several plagioclase‐rich light‐toned float rocks.
A. M. Ollila   +43 more
wiley   +1 more source

Enhancing operational decision-making in hydrocarbon exploration drilling using machine learning for gas data interpretation. [PDF]

open access: yesSci Rep
Silva GMA   +12 more
europepmc   +1 more source

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