Results 91 to 100 of about 5,124,862 (215)

Lower Cambrian reefal cryptic communities

open access: yes, 1995
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Zhuravlev, Andrey Yu, Wood, Rachel
openaire   +2 more sources

Structure of the moktakon formation of the lower cambrian (Yuzhno-Tungusskaya oil and gas region, Leno-Tungusskaya oil and gas province)

open access: yesИзвестия высших учебных заведений: Геология и разведка
Background. The structure of the Lower Cambrian Moktakon Formation extended across the Yuzhno-Tungusskaya oil and gas region of the Leno-Tungusskaya oil and gas province is studied.Aim.
A. R. Ryazanov   +3 more
doaj   +1 more source

Sedimentary Environment and Organic Matter Enrichment Mechanism of the Lower Cambrian Shale in the Northern Margin of the Yangtze Platform

open access: yesJournal of Marine Science and Engineering
Current models of sedimentary environments and organic matter (OM) enrichment for the Lower Cambrian black shales in the Yangtze Platform have not yet incorporated its northern carbonate platform margin where the related research is lacked.
Yineng Tan   +6 more
doaj   +1 more source

The eyes of Lower Cambrian eodiscid trilobites

open access: yes, 1990
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Zhang, Xi-Guang   +1 more
openaire   +1 more source

Plated Cambrian bilaterians reveal the earliest stages of echinoderm evolution [PDF]

open access: yes, 2012
Echinoderms are unique in being pentaradiate, having diverged from the ancestral bilaterian body plan more radically than any other animal phylum. This transformation arises during ontogeny, as echinoderm larvae are initially bilateral, then pass through
Samuel Zamora (160825)   +11 more
core   +1 more source

Oldest known brachiopod burrow: the Lower Cambrian of Labrador

open access: yes, 1978
A specimen of the ichnospecies Lingulichnus verticalis was recovered from the Lower Cambrian Bradore Formation of southern Labrador. The sample represents the only known Cambrian example of an in situ lingulid, and sheds light on the evolution of the ...
David R. Kobluk, S. George Pemberton
core   +1 more source

Tectonic evolution of the western Yangtze Block during the Ediacaran–Cambrian: evidence from detrital zircon U-Pb geochronology

open access: yesDizhi lixue xuebao
Objective  The Yangtze Block was a crucial component of the Gondwana supercontinent. During the Ediacaran–Early Cambrian, its western margin underwent a marked transition from carbonate- to siliciclastic-dominated depositional environments.
SHI Zhiqiang   +4 more
doaj   +1 more source

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