Results 21 to 30 of about 4,741,469 (223)

Was there more space in the late Early Devonian for marine biodiversity to peak than in the early Late Ordovician?: A brief note [PDF]

Geološki Anali Balkanskoga Poluostrva, 2013
After the so-called “Cambrian explosion”, marine biodiversity peaked either in the early Late Ordovician (as shown by the “classical” curves based on the extensive palaeontological data compilation) or in the late Early Devonian (as shown by the
Ruban Dmitry A.
doaj   +1 more source

EARLY ORDOVICIAN AND DEVONIAN CONODONTS FROM THE WESTERN KARAKORAM AND HINDU KUSH, NORTHERNMOST PAKISTAN

Rivista Italiana di Paleontologia e Stratigrafia, 1999
Extensive tracts of Devonian and older sedimentary and igneous units occur within the axial region of the western Karakoram Block of northernmost Pakistan over a distance in excess of 200 km between the the headwaters of the Karambar valley in ...
JOHN A. TALENT, MAURIZIO GAETANI, RUTH MAWSON PETER D. MOLLOY, PATRICK J. CONAGHAN, OLIVER LEHNERT, JULIE A. TROTTER   +5 more
doaj   +1 more source

Kazakhstan and Tarim microcontinents on the Devonian paleotectonic reconstructions

Литосфера, 2018
Devonian latitudes of the Kazakhstan and Tarim microcontinents obtained from paleomagnetic data. Definition based on the results of the study pre-folded high-temperature components of magnetization of rocks.
Valentin S. Burtman, Ariadna V Dvorova
doaj   +1 more source

Morphological disparity of early ammonoids: A geometric morphometric approach to investigate conch geometry

Acta Palaeontologica Polonica, 2023
Fossils of Devonian ammonoids are abundant and well-preserved in the Anti-Atlas of Morocco; as such they provide an invaluable record of regional morphological disparity changes (diversity of shapes) that characterise the first steps of ammonoid ...
NINON ALLAIRE, SAMUEL GINOT, KENNETH DE BAETS, DIETER KORN, NICOLAS GOUDEMAND, CLAUDE MONNET, CATHERINE CRÔNIER   +6 more
doaj   +1 more source

The Truong Son, Loei-Phetchabun, and Kontum Terranes in Indochina: Provenance, Rifting, and Collisions

Frontiers in Earth Science, 2021
The three main regions of Indochina are defined as the Truong Son, Loei-Phetchabun, and Kontum terranes. The aim of this review is to integrate numerous petrological studies with sedimentary, palaeontological, and provenance studies in order to construct
Clive Burrett, Mongkol Udchachon, Mongkol Udchachon, Hathaithip Thassanapak   +3 more
doaj   +1 more source

Palaeozoic Palaeomagnetism of South-Eastern Australia [PDF]

, 2004
The drift history of Gondwana following the break-up of Rodinia (or perhaps Pannotia) to the amalgamation into Pangaea has great implications in many disciplines in Earth sciences, but remains largely unknown.
Vérard, Christian
core   +1 more source

Facies-succession and architecture of the third-order sequences and their stratigraphic framework of the Devonian in Yunnan-Guizhou-Guangxi area, South China

Journal of Palaeogeography, 2013
The Caledonian orogeny at the end of the Silurian resulted in great changes in the palaeogeography in the Yunnan-Guizhou-Guangxi area of South China; the continental area of the Early Paleozoic evolved into the extensive Dian-Qian-Gui Sea in the Late ...
Mei Mingxiang, Maurice E. Tucker
doaj   +1 more source

Shallow-marine testate amoebae with internal structures from the Lower Devonian of China

iScience, 2023
Summary: Testate amoebae, a polyphyletic protist group inhabiting a wide variety of extant ecosystems, have evolved as far back as early Neoproterozoic. However, their fossil record is discontinuous and biased toward empty shells.
Kai Wang, Hong-He Xu, Bing-Cai Liu, Jiao Bai, Yao Wang, Peng Tang, Jian-Feng Lu, Yi Wang   +7 more
doaj   +1 more source

Indigenous demosponge spicules in a Late Devonian stromatoporoid basal skeleton from the Frasnian of Belgium [PDF]

, 2014
peer ...
Kershaw, S, Reitner, J., Reynolds, A., Hubert, M, Reynolds, Alan, Mistiaen, Bruno, Boulvain, F., Benoit L. M. Hubert, Boulvain, F, Stephen Kershaw, Hubert, B.L.M., Reynolds, A, Alan Reynolds, Da Silva, A-C, Mistiaen, B, Boulvain, Frédéric, Bruno Mistiaen, Hubert, Benoit L. M., Frédéric Boulvain, Kershaw, Stephen, Anne-Christine Da Silva, Da Silva, A.-C., Reitner, J, Joachim Reitner, Da Silva, Anne-Christine, Hubert, BLM, Reitner, Joachim   +26 more
core   +1 more source

Paleomagnetic and rock magnetic study of Lower Devonian red beds from Podolia: remagnetization problems

Геофизический журнал, 2015
Results of paleomagnetic studies of red bed Early Devonian deposits of Podolia, which make the Dniester series (southwestern Ukraine, the Dniester basin) have been given.
V. Bakhmutov, M. Yelenskaya, M. Kadzyalko-Hofmokl, E. Polyachenko, L. Konstantinenko, P. Zhilkovsky   +5 more
doaj   +1 more source