Results 41 to 50 of about 5,019 (222)

Diversity and development of the hemibacula of croaking geckos (Sphaerodactylidae: Aristelliger)

Journal of Anatomy, Volume 247, Issue 6, Page 1145-1156, December 2025.
Geckos in the genus Aristelliger exhibit enigmatic mineralized elements in their hemipenes, called hemibacula. We examined hemibacula of every species of Aristelliger using μCT, clearing and staining, and histology. We found hemibacula exhibit lineage‐specific morphology, isometric growth after sexual maturity, and are composed of mineralized ...
Aaron H. Griffing, Daniel J. Paluh, Jonathan C. DeBoer, Juan D. Daza, Tony Gamble, Anthony P. Russell, Aaron M. Bauer   +6 more
wiley   +1 more source

Recent developments in the Upper Ordovician and lower Silurian conodont biostratigraphy in Estonia [PDF]

Estonian Journal of Earth Sciences, 2007
The current state of and the latest developments in the conodont-based biostratigraphical studies of Upper Ordovician and lower Silurian strata in Estonia are discussed.
Männik, Peep
doaj  

Upper Sandbian–lower Katian bio- and chemostratigraphy in the Pajevonys-13 core section, Lithuania [PDF]

Estonian Journal of Earth Sciences, 2016
The succession of five formations (Auleliai, Vilučiai, Alvitas, Šakiai, Jakšiai) corresponding to the upper Sandbian and lower Katian in southern Lithuania is dated based on new bio- and chemostratigraphical data from the Pajevonys-13 core section.
Linda Hints, Juozas Paškevičius, Tõnu Martma, Peep Männik, Jaak Nõlvak   +4 more
doaj   +1 more source

Sedimentological characterisation is a necessary prerequisite for interpretation of stable carbon isotope ratios of bulk sediment from reefal settings

Sedimentology, Volume 72, Issue 7, Page 2361-2392, December 2025.
ABSTRACT For most of Earth history, carbonate sediments deposited in shallow marine settings are the only remaining archive of changing biogeochemical cycles. All deep‐sea sediments older than >200 Ma have been subducted and are therefore lost from the record. Stable carbon isotope (δ13C) values of shallow marine carbonates are available for older time
Colleen N. Brown, Sam J. Purkis, Eberhard Gischler, Amanda M. Oehlert   +3 more
wiley   +1 more source

The Spatial and Temporal Evolution of Mixed Carbonate‐Clastic Mud‐Dominated Basin Fill Successions: The Middle to Late Devonian Shelf Margin, Western Canada

Basin Research, Volume 37, Issue 6, November/December 2025.
The spatial interplay between updip clastic and carbonate depositional systems and downdip detrital and biogenic mud dominated depositional systems are mapped temporally using the sequence stratigraphic method to predict the occurrence of aquifers, petroleum reservoirs and organic‐rich deposits. ABSTRACT Middle to Upper Devonian strata preserved in the
Rene Jonk, Kevin Bohacs, Ken Potma
wiley   +1 more source

Historical Biogeography of Spiny Lobsters in the Genus Panulirus (Achelata: Palinuridae)

Journal of Biogeography, Volume 52, Issue 11, November 2025.
ABSTRACT Aim Panulirus is the spiny lobster genus with the most living species, containing 22 recognised species split into two lineages distinguished by habitat preference. Diversification has been proposed to occur due to geographic events affecting the distribution of adults and the dispersal potential of long‐lived larvae by oceanic currents ...
Alyssa M. Baker, Michael J. Childress, J. Antonio Baeza   +2 more
wiley   +1 more source

Disentangling Continental Weathering During the Late Paleozoic Ice Age

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract The consumption of atmospheric CO2 through continental weathering played a critical role in shaping the evolution of the late Paleozoic Ice Age (LPIA), presumably driven by the Hercynian orogeny and the evolution of terrestrial plants. However, the relative impacts of these two major drivers to continental weathering remain poorly constrained.
Biao Gao, Guozhen Xu, Wenli Yang, Jitao Chen   +3 more
wiley   +1 more source

Lower Silurian biostratigraphy of the Viirelaid core, western Estonia [PDF]

Estonian Journal of Earth Sciences, 2007
The distribution of five groups of fossils in the upper Llandovery (Telychian) and Wenlock of the Viirelaid core section, Estonia, is presented and discussed in terms of their biozones (conodonts and chitinozoans) and mutual positions (scolecodonts ...
Nestor, Viiu, Meidla, Tõnu, Männik, Peep, Hints, Olle, Rubel, Madis, Sarv, Lembit, Sibul, Ivo   +6 more
doaj  

Phytoplankton Blooms on the Barents Shelf, Svalbard, Associated With the Permian–Triassic Mass Extinction

AGU Advances, Volume 6, Issue 5, October 2025.
Abstract Mid‐ to higher‐latitude shallow marine environments are suggested to serve as refugia for organisms during intervals of rapid environmental change associated with hyperthermals. To understand the role of these environments during hyperthermals, we herein investigate the Permian–Triassic environmental crisis, which led to the most severe mass ...
S. Z. Buchwald, D. Birgel, K. Senger, T. Mosociova, Y. Pei, V. Zuchuat, L. G. Tarhan, A. B. Frank, F. Galasso, M. A. Gómez Correa, E. Koşun, B. Karapunar, X. Wang, E. Kustatscher, H. Prinoth, N. Lahajnar, R. Steinkrauss, J. Peckmann, W. J. Foster   +18 more
wiley   +1 more source

The Middle Carboniferous Boundary in the North of Pay-Khoy – Correlation between the Shallow- and Deep-Water Sequences [PDF]

Учёные записки Казанского университета: Серия Естественные науки, 2017
The paper considers the Lower-Middle Carboniferous boundary interval in the sections of the Pay-Khoy carbonate parautochthone (shallow-water facies) and the Kara slate allochthone (deep-water facies) with respect to the boundary tracing criteria.
A.V. Zhuravlev, Ya.A. Vevel
doaj