Results 161 to 170 of about 5,673 (250)

Oldest record of Machimosaurini (Thalattosuchia, Teleosauroidea): teeth and scavenging traces from the Middle Jurassic (Bajocian) of Switzerland. [PDF]

R Soc Open Sci
Scheyer TM, Johnson MM, Bastiaans D, Miedema F, Maxwell EE, Klug C.   +5 more
europepmc   +1 more source

A new possible megalosauroid theropod from the Middle Jurassic Xintiangou Formation of Chongqing, People's Republic of China and its implication for early tetanuran evolution. [PDF]

Sci Rep, 2020
Dai H, Benson R, Hu X, Ma Q, Tan C, Li N, Xiao M, Hu H, Zhou Y, Wei Z, Zhang F, Jiang S, Li D, Peng G, Yu Y, Xu X.   +15 more
europepmc   +1 more source

The Backbone of Regionalisation: Refining Axial Regionalisation Through 3D Morphometric Sampling Strategies on Elapid Snakes

Journal of Morphology, Volume 287, Issue 8, August 2026.
Using 3D geometric morphometrics on every precaudal vertebra from 12 elapid snakes, this study used segmented linear regression to test regionalisation. The results show a five‐region model is best supported, including short cervical and lumbar regions and a strong heart‐aligned boundary at approximately 20% of the pre‐caudal column.
Ammresh, Marco Camaiti, Jane Melville, Alistair Evans, Emma Sherratt   +4 more
wiley   +1 more source

The La Voulte-sur-Rhône Konservat-Lagerstätte reveals the male and female internal anatomy of the Middle Jurassic clawed lobster Eryma ventrosum. [PDF]

Sci Rep
Charbonnier S, Vogt G, Forel MB, Hieu N, Devillez J, Laville T, Poulet-Crovisier N, King A, Briggs DEG.   +8 more
europepmc   +1 more source

On Shell Closure and Beyond: Classification and Functional Interpretation of Chela Types in Paguroidea (Decapoda)

Journal of Morphology, Volume 287, Issue 8, August 2026.
MicroCT technology and 3D shape analysis were used to classify paguroid chelae into six distinct shape types: compact, sturdy, elongate, scutiform, discoid, and compact. Each type is linked to characteristic biological roles: paired semidiscoid chelae enable symmetrical shelter closure; scutiform and discoid chelae support one‐sided shelter closure ...
Yannic C. Ege, Christian Foth, Stefan Richter   +2 more
wiley   +1 more source

A large new Middle Jurassic ichthyosaur shows the importance of body size evolution in the origin of the Ophthalmosauria. [PDF]

BMC Ecol Evol
Miedema F, Bastiaans D, Scheyer TM, Klug C, Maxwell EE.   +4 more
europepmc   +1 more source

Columnanidus calitzdorpensis ichnogen. ichnosp. nov: A new Middle Pleistocene subterranean termite trace fossil from South Africa

Journal of Quaternary Science, Volume 41, Issue 6, Page 933-949, August 2026.
ABSTRACT Termites are landscape geo‐engineers whose nesting activities substantially modify the physical and chemical properties of soils. Fossilised termite nests commonly constitute the only identifiable evidence of ancient termite activity and represent valuable trace fossil archives for reconstructing past environments.
Miengah Abrahams, Robert A. Muir, Jorge F. Genise, John E. Almond, Gcinamahlubi Hadebe, John C. Hellstrom, Rabia Jacobs, Chris Harris   +7 more
wiley   +1 more source

Exhumed eo‐Alpine High‐Pressure Rocks Fed Campanian Turbidites in Eastern Sardinia

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract This study investigates the detrital record of the early orogenic evolution of the Sardinia‐Calabria system, preserved in Upper Cretaceous arenites exposed in eastern Sardinia. Sardinia and Corsica form a continental block that includes a segment of the Alpine orogen and of its former foreland basin.
Francesco Massari, Maria Giuditta Fellin, Cristina Stefani, Eva Enkelmann, Iginio Dieni, Stefano Sanchetti   +5 more
wiley   +1 more source

6 Rhaetian to Middle Jurassic

João P. Trabucho Alexandre, Theo E. Wong   +1 more
openaire   +1 more source

Carbonate‐Associated Sulfate Does Not Record Superheavy δ34S in Deep Scandinavian Bedrock Fractures: Implications for Pyrite Formation in the Deep Biosphere

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract In deep bedrock fractures of the Fennoscandian shield, pyrite with “superheavy” δ34S values of up to 147‰ exists together with calcite. The extreme variability and 34S‐enrichment in pyrite indicate that microbial sulfate reduction (MSR) evolved to almost complete sulfate exhaustion in closed‐system microenvironments.
V. Fichtner, F. Genske, E. Kooijman, H. Drake   +3 more
wiley   +1 more source