Results 51 to 60 of about 11,063 (154)

Strontium isotope and element constraints on the paleoenvironment of the latest Ediacaran in the Sichuan Basin, southeastern Tibetan Plateau

open access: yesFrontiers in Earth Science, 2022
The Ediacaran–Cambrian period witnessed episodic extinctions, oxygenation of seawaters, Cambrian explosions, and tectonic events. However, compared with the various high-resolution geochemical records of the early–middle Ediacaran and Cambrian, the ...
Xiaojun Zhang   +16 more
doaj   +1 more source

Uncovering the spatial heterogeneity of Ediacaran carbon cycling [PDF]

open access: yes, 2016
Author Posting. © The Author(s), 2016. This is the author's version of the work. It is posted here under a nonexclusive, irrevocable, paid-up, worldwide license granted to WHOI. It is made available for personal use, not for redistribution.
Algeo, Thomas J.   +11 more
core   +1 more source

The Shell of the Tortoise: Four Essays & an Assemblage by Don McKay [PDF]

open access: yes, 2014
Review of The Shell of the Tortoise: Four Essays & an Assemblage by Don ...
Payne, Tonia L
core   +1 more source

Controls on the evolution of Ediacaran metazoan ecosystems: A redox perspective [PDF]

open access: yes, 2017
A growing number of detailed geochemical studies of Ediacaran (635–541 Ma) marine successions have provided snapshots into the redox environments that played host to the earliest known metazoans.
Aceñolaza   +254 more
core   +3 more sources

Decimetre-scale multicellular eukaryotes from the 1.56-billion-year-old Gaoyuzhuang Formation in North China

open access: yesNature Communications, 2016
Macroscopic organisms are rare in the fossil record until the Ediacaran Period, beginning 635 million years ago. Here, Zhu et al. report the discovery of 1.56-billion-year-old carbonaceous compression fossils that provide evidence of the evolution of ...
Shixing Zhu   +8 more
doaj   +1 more source

The last common bilaterian ancestor [PDF]

open access: yes, 2002
Many regulatory genes appear to be utilized in at least superficially similar ways in the development of particular body parts in Drosophila and in chordates.
Davidson, Eric H., Erwin, Douglas H.
core  

Protoconodont fossils for refining the Cambrian bottom and the contribution to shale gas formation along the southwest margin of Yangtze Block

open access: yesChina Geology, 2020
: It has been an intense debate on the exact boundary between Ediacaran and Cambrian in the southwest Yangtze Block. The calibration of this critical boundary has a remarkable influence on the further investigation of the break-up of the Rodinia ...
Jun-ping Liu   +10 more
doaj   +1 more source

Ediacaran Macro Body Fossils [PDF]

open access: yes, 2010
This paper, Ediacaran Macro Body Fossils, reports a new discovery of well preserved three dimensional macro body fossils of the Ediacaran Period in central YunNan province in the People's Republic of China.
ChuanWei Yang   +5 more
core   +1 more source

Tubular Compression Fossils from the Ediacaran Nama Group, Namibia [PDF]

open access: yes, 2010
Abundant tubular macrofossils occur in finely laminated siltstones and shales of the 548-542 Ma Schwarzrand Subgroup. Nama Group, Namibia. The Nama tubes occur in both the Vingerbreek and Feldschuhhorn members commonly in dense populations and always in ...
Abelson, John   +13 more
core   +1 more source

Detrital zircon from a late Paleozoic accretionary complex of SW Iberia (Variscan Belt): History of crustal growth and recycling at the Rheic convergent margin [PDF]

open access: yes, 2012
In this study we present new U-Pb ages of detrital zircons from greywackes and quartzites of the Pulo do Lobo Anticline (PLA) that have been interpreted to represent a Late Paleozoic accretionary complex in SW Iberia.
Chichorro, M.   +4 more
core  

Home - About - Disclaimer - Privacy