Results 31 to 40 of about 4,741,469 (223)
The stages of сalcareous Algae development in the Urals during Devonian
Литосфера, 2015 The article highlights the following stages of the development microscopic Devonian Algae in the Urals: the rise of Algae in the early Devonian (Karpinski time), degradation of Algae flora during the end of Early Devonian (taltiysk time), the Middle ...
A. L. Anfimov
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A new Lower Devonian arthrodire (Placodermi) from the NW Siberian Platform [PDF]
Estonian Journal of Earth Sciences, 2013 A new genus and species of arthrodires, Eukaia elongata (Actinolepidoidei, Placodermi), is described from the Lower Devonian, ?Pragian of the Turukhansk region, NW Siberian Platform.
Elga Mark-Kurik
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A new stem sarcopterygian illuminates patterns of character evolution in early bony fishes
Nature Communications, 2017 Terrestrial vertebrates branched from the lobe-finned fish in the Late Devonian. Here, Lu et al. describe the new lobe-finned fish Ptyctolepis brachynotus dating from the Early Devonian, which preserves a novel combination of cranial characters and ...
Jing Lu +3 more
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Journal of Palaeogeography, 2015 The present paper addresses two tectonostratigraphic concerns on the Late Paleozoic Tianshan tectonic complex (TTC), Xinjiang, Northwest (NW) China: (1) stratigraphic succession and age constraint of the Bayingou ophiolite mélange, eastern Tianshan ...
Zhong-Qiang Chen +2 more
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Plant diversity in the Early Devonian – stratigraphic and geographic patterns [PDF]
, 2016 The Early Devonian epoch (419.2 ±3.2-393.3 ±1.2 Ma) (Gradstein 2012) marked the commencement of a rapid evolutionary radiation and increase in the diversity and complexity of basal tracheophytes and other groups of land plants.
Barrett, Jeffery A.
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Developmental Dynamics, EarlyView.Abstract Background The dentigerous jawbones of a 423‐million‐year‐old stem chondrichthyan (ischnacanthid acanthodian) carry a characteristic combination of multi‐row non‐shedding white teeth with brownish overgrowing denticles. The color distinction makes it a good model for observing the interaction between two odontode lineages, but the nature of ...
Jia‐Cih Kang +3 more
wiley +1 more source
An Early Devonian nonagonal orthoconic cephalopod from Morocco
, 2010 A new specimen of a Dalejan (Late Emsian, Early Devonian) orthoconic cephalopod is described from the southwestern Tafi lalt (Anti-Atlas, Morocco). It has a nonagonal cross section (with nine edges) and resembles Kionoceras.
Klug, C, De Baets, K, Kröger, B
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A Late Devonian tree lycopsid with large strobili and isotomous roots
Communications Biology, 2022 A new species of Late Devonian fossil lycopsid with large strobili and differentiated sporophylls provides insight into reproductive investment of early tree lycopsids.
Le Liu +5 more
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Geological Journal, EarlyView.The composition of intrusive rocks suggests that the magma was likely generated in a subduction‐related setting. The arc crustal thickness in the Phnom Sro Ngam and Halo Prospects was probably < 40 km during emplacement. Zircon U–Pb age range indicates a correlation with Loei Fold Belt magmatic activity.
Sirisokha Seang +6 more
wiley +1 more source
The Wurawina Supergroup, Late Cambrian to Early Devonian, Tasmania [PDF]
, 1986 The term "Wurawina Supergroup" is proposed for the conformable sequence in western Tasmania consisting of the Denison Group, the Gordon Group and the Eldon Group or the Tiger Range Group and their correlates.
Banks, MR +3 more
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