Results 11 to 20 of about 6,176 (252)

A review of helochelydrid shell material from late Albian to early Cenomanian greensands of Southern England, United Kingdom

The Anatomical Record, EarlyView., 2022
Abstract A number of helochelydrid turtle shell remains were recovered over the course of the 19th century from mid‐Cretaceous sediments throughout Southern England, including the poorly figured and described types of Trachydermochelys phlyctaenus from the Cambridge Greensand of Cambridgeshire, Plastremys lata from the Upper Greensand of the Isle of ...
Walter G. Joyce
wiley   +1 more source

Measurement theory and paleobiology

Trends in Ecology & Evolution, 2023
Measurement theory, a branch of applied mathematics, offers guiding principles for extracting meaning from empirical observations and is applicable to any science involving measurements. Measurement theory is highly relevant in paleobiology because statistical approaches assuming ratio-scaled variables are commonly used on data belonging to nominal and
Kjetil Lysne Voje, James G. Saulsbury, Jostein Starrfelt, Daniel Varajão Latorre, Alexis Rojas, Vilde Bruhn Kinneberg, Lee Hsiang Liow, Connor J. Wilson, Erin E. Saupe, Mark Grabowski   +9 more
openaire   +2 more sources

Progress in echinoderm paleobiology [PDF]

Journal of Paleontology, 2017
Echinoderms are a diverse and successful phylum of exclusively marine invertebrates that have an extensive fossil record dating back to Cambrian Stage 3 (Zamora and Rahman, 2014). There are five extant classes of echinoderms (asteroids, crinoids, echinoids, holothurians, and ophiuroids), but more than 20 extinct groups, all of which are restricted to ...
Zamora Iranzo, Samuel Andrés, Rahman, Imran A.   +1 more
openaire   +1 more source

The soft-tissue attachment scars in Late Jurassic ammonites from Central Russia [PDF]

Acta Palaeontologica Polonica, 2015
Soft-tissue attachment scars of two genera and four species of Late Jurassic craspeditid ammonites from the Russian Platform are described. A previously suggested relationship between lateral attachment scars and ammonoid hyponome is confirmed, however,
Aleksandr A. Mironenko
doaj   +1 more source

A Plea for a New Synthesis: From Twentieth-Century Paleobiology to Twenty-First-Century Paleontology and Back Again

Biology, 2022
In this paper, I will briefly discuss the elements of novelty and continuity between twentieth-century paleobiology and twenty-first-century paleontology.
Marco Tamborini
doaj   +1 more source

Osteohistological characterization of notosuchian osteoderms: Evidence for an overlying thick leathery layer of skin

Journal of Morphology, Volume 284, Issue 1, January 2023., 2023
The perpendicular insertion of Sharpey's fibers in the external cortex suggests the presence of a thick leathery skin layer overlying notosuchian osteoderms. Although intramembranous ossification is the main process involved in the development of crocodyliform osteoderms, we reported a case of metaplastic development.
Mariana Valéria de Araújo Sena, Thiago da Silva Marinho, Felipe Chinaglia Montefeltro, Max Cardoso Langer, Thiago Schineider Fachini, William Roberto Nava, André Eduardo Piacentini Pinheiro, Esaú Victor de Araújo, Paul Aubier, Rafael César Lima Pedroso de Andrade, Juliana Manso Sayão, Gustavo Ribeiro de Oliveira, Jorge Cubo   +12 more
wiley   +1 more source

Coherent changes in wood charcoals, site occupation and lithic technology across the MIS 4/3 transition at Klein Kliphuis rock shelter, South Africa

Journal of Quaternary Science, Volume 38, Issue 1, Page 38-48, January 2023., 2023
Abstract We explore the correspondence between changing palaeoenvironments, patterns of site use, and lithic technology at the rock shelter site Klein Kliphuis (South Africa) across the interval 65–55 000 years before present. This period coincides with the termination of Marine Isotope Stage (MIS) 4, and the disappearance of an iconic late Pleistocene
Alex Mackay, Caroline R. Cartwright
wiley   +1 more source

Multi‐proxy reconstruction of the Holocene vegetation and land use dynamics in the Julian Alps, north‐west Slovenia

Journal of Quaternary Science, Volume 38, Issue 1, Page 107-122, January 2023., 2023
Abstract Small mountain lakes are natural archives for understanding long‐term natural and anthropogenic impact on the environment. This study focused on long‐term (last ca. 13 000 years) vegetation changes and sedimentary processes in the catchment area of Lake Planina pri jezeru (1430 m a.s.l.) by using mineralogical, geochemical and palynological ...
Nina Caf, Pierre Sabatier, Andrej Šmuc, Nives Ogrinc, Matej Dolenec, William Rapuc, Doris Potočnik, Ulrich von Grafenstein, Maja Andrič   +8 more
wiley   +1 more source

Photosymbiosis in Late Triassic scleractinian corals from the Italian Dolomites [PDF]

PeerJ, 2021
During the Carnian, oligotrophic shallow-water regions of the western Tethys were occupied by small, coral-rich patch reefs. Scleractinian corals, which already contributed to the formation of the reef structure, owed their position most probably to the ...
Katarzyna Frankowiak, Ewa Roniewicz, Jarosław Stolarski   +2 more
doaj   +2 more sources

The paleobiological record of photosynthesis [PDF]

Photosynthesis Research, 2010
Fossil evidence of photosynthesis, documented in Precambrian sediments by microbially laminated stromatolites, cyanobacterial microscopic fossils, and carbon isotopic data consistent with the presence of Rubisco-mediated CO2-fixation, extends from the present to ~3,500 million years ago. Such data, however, do not resolve time of origin of O2-producing
J. William Schopf, J. William Schopf
openaire   +3 more sources