Results 51 to 60 of about 3,102 (219)

The lower jaw of Devonian ray‐finned fishes (Actinopterygii): Anatomy, relationships, and functional morphology

The Anatomical Record, Volume 309, Issue 3, Page 550-602, March 2026.
Abstract Actinopterygii is a major extant vertebrate group, but limited data are available for its earliest members. Here we investigate the morphology of Devonian actinopterygians, focusing on the lower jaw. We use X‐ray computed tomography (XCT) to provide comprehensive descriptions of the mandibles of 19 species, which span the whole of the Devonian
Ben Igielman, Rodrigo Tinoco Figueroa, Robert R. Higgins, Stephanie E. Pierce, Michael I. Coates, Emily M. Troyer, Vincent Fernandez, Kathleen Dollman, Jing Lu, Min Zhu, Matt Friedman, Sam Giles   +11 more
wiley   +1 more source

Reflection of global events Frasnian epoch in the section of the western slope Polar Urals

Литосфера, 2018
For the first time we carried out a detailed comprehensive study of Frasnian stage in the lower сurrent of the Malaya Usa River located within the Eletskaya structural-formational zone of the Polar Urals.
Dmitrii B. Sobolev, Marina A. Soboleva
doaj   +1 more source

The role of conodonts in the global stratigraphic correlation on example of southern Siberia (Russia) and eastern Serbia [PDF]

Geološki Anali Balkanskoga Poluostrva, 2015
Conodonts are very precise tools for global stratigraphic correlation of Devonian deposits. They can be correlated at the level of standard conodont zones even for basins having very different geological structure.
Rodygin Sergei A.
doaj   +1 more source

New Zealand Geological Timescale 2025

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
New Zealand Geological Timescale 2025 (NZGT 2025) is the first comprehensive update and revision of the New Zealand Geological Timescale in a decade. The criteria used to establish age ranges of New Zealand Stages within the NZGT have been reviewed, calibrated, and revised where required against the 2023/04 International Chronostratigraphic Chart and ...
Christopher D. Clowes, James S. Crampton, Kyle J. Bland, J. Ian Raine, Andrew F. Boyes, Hamish J. Campbell, Erica M. Crouch, Martin P. Crundwell, Neville Hudson, Elizabeth M. Kennedy, Donald A. B. MacFarlan, Hugh E. G. Morgans, Marcus D. Richards, Matthew W. Sagar   +13 more
wiley   +1 more source

The Llandovery–Wenlock boundary interval in west-central continental Estonia: an example from the Suigu (S-3) core section [PDF]

Estonian Journal of Earth Sciences, 2014
A gap corresponding to several conodont and chitinozoan zones occurs in the Llandovery–Wenlock boundary interval in some sections in the western coastal region of Estonia and on islands in the Muhu Strait.
Peep Männik, Anne Põldvere, Viiu Nestor, Toivo Kallaste, Tarmo Kiipli, Tõnu Martma   +5 more
doaj   +1 more source

And then there were none: decrease of origination and the decline of Conulariida

Papers in Palaeontology, Volume 12, Issue 2, March/April 2026.
Abstract Although the evolutionary history of conulariids has been widely studied, previous works have focused mostly on limited time intervals. In this paper, we examine the diversity dynamics of the group throughout its entire history, using various mathematical approaches.
Julio Bernad, Javier Echevarría, Sonia Ros‐Franch   +2 more
wiley   +1 more source

Conodonts from subsurface Champlainian (Ordovician) rocks of eastern Indiana

, 1986
"Conodonts from the Dutchtown (Champlainian) part of five cores in Rush, Fayette, Franklin, and Decatur Counties, Ind., represent 17 hyaline species that include two newly named genera, Lumidens and Scapulidens; two new genera left in open nomenclature ...
Ethington, Raymond L., Droste, John B., Rexroad, Carl B.   +2 more
core   +1 more source

Inferring Cenozoic Cover Thickness and Bedrock Sedimentary Material in 3D From Geophysical Data Using Machine Learning Algorithms: A Case Study in the Lockington Region, Victoria, Australia

Earth and Space Science, Volume 13, Issue 3, March 2026.
Abstract This study presents a supervised machine learning approach to constructing a 3D geological model for the Lockington area in Victoria, Australia, by integrating borehole observations, geophysical surveys (magnetic, gravity, and radiometric), and elevation data.
Limin Xu, Eleanor C. R. Green, Mark A. McLean   +2 more
wiley   +1 more source

The Paleo‐Tethys Suture Zone in the Afghan Hindu Kush‒Pamir: Geo‐Thermochronology, Geochemistry, Tectonics

Tectonics, Volume 45, Issue 3, March 2026.
Abstract In the Afghan Hindu Kush, the 223–209 Ma (≤800°C) Salang batholith is part of the Silk‐Road magmatic arc that was built on ∼40‐km‐thick Turan‐Karakum block continental crust. The batholith constitutes the hanging wall of the Herat‐Panjshir‐Badakhshan—the Paleo‐Tethys—suture zone, vestige of the subducted Paleozoic‐early Mesozoic Paleo‐Tethys ...
Lothar Ratschbacher, Said Amin Hashimy, Hasan Malistani, Yasuhito Osanai, Jianhua Li, Zhao Yang, Bradley R. Hacker, Leander Franz, Hadi Karimi   +8 more
wiley   +1 more source

Data from: Allometry in Anisian (Middle Triassic) segminiplanate conodonts and its implications for conodont taxonomy

, 2016
Conodonts are a clade of chordates and are valuable indicator fossils for biostratigraphy. The segminiplanate (neogondolelliform) conodonts represent a major morphological group ranging from upper Carboniferous to Upper Triassic marine sediments. However,
Yanlong Chen, Krystyn, Leopold, Sylvain Richoz, Leopold Krystyn, Chen, Yanlong, Neubauer, Thomas A., Richoz, Sylvain, Thomas A. Neubauer   +7 more
core   +1 more source