The importance of Nama Group sediments and fossils to the debate about animal origins [PDF]
, 1997 Main articleThe purpose of this review is to draw attention to the contribution that Nama sediments and fossils have made, and potentially can make, to the ongoing debate about metazoan origins.
Brain, C. K.
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Tubular Compression Fossils from the Ediacaran Nama Group, Namibia [PDF]
, 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
, 2005 24 páginas, 43 fotos.-- En: Muñoz Barco, P. & Martínez Flores, E.
Gutiérrez-Marco, J. C. +4 more
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Depositional facies and platform architecture of microbialite-dominated carbonate reservoirs, Ediacaran–Cambrian Ara Group, Sultanate of Oman [PDF]
, 2014 Intrasalt carbonates of the Ediacaran–Cambrian Ara Group constitute a significant reservoir element of the intrasalt “stringer” play in Oman, in which dolomitic carbonates are encased in salt at depths of 3 to 7 km (1.9 to 4.3 mi).
Al-Rawahi, Zuwaina, Grotzinger, John
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Brazilian Journal of Geology: Sedimentary rocks of the Sete Lagoas Formation, exposed in the left margin of the São Francisco river (Minas Gerais State, Brazil), were deposited on the Januária-Itacarambi basement high.
Pascoal Perrella Júnior +5 more
doaj +1 more source
Revisiting the Ediacaran-Cambrian boundary in the Ossa-Morena Zone (SW Iberia) [PDF]
, 2019 Some of the best outcrops of Iberia to study the Ediacaran-Cambrian boundary are located in the Ossa- Morena Zone. In the Crato-Campo Maior region (SW Iberia, Portugal), this stratigraphic boundary is marked by an angular unconformity (Gonçalves, 1971 ...
Dias da Silva, I. +3 more
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Dawn of diverse shelled and carbonaceous animal microfossils at ~ 571 Ma
Scientific ReportsThe Ediacaran-Cambrian transition documents a critical stage in the diversification of animals. The global fossil record documents the appearance of cloudinomorphs and other shelled tubular organisms followed by non-biomineralized small carbonaceous ...
Luana Morais +15 more
doaj +1 more source
Sedimentary provenance in the southern sector of the São Francisco Basin, SE Brazil
Brazilian Journal of Geology: We present new Sm-Nd, U-Pb and Hf isotope geochronological data for the siliciclastic rocks in the southern sector of the São Francisco Basin. An abrupt change in the Sm-Nd data is observed from the Carrancas Formation’s oligomitic conglomerates (TDM ...
Gustavo Macedo de Paula-Santos +1 more
doaj +1 more source
Role of low intensity environmental disturbance in structuring the earliest (Ediacaran) macrobenthic tiered communities [PDF]
Rangeomorphs were important components of Ediacaran macrobenthic ecosystems, yet their biology and ecology remain poorly constrained. They formed high-density, tiered communities that were subjected to intermittent burial events, the largest of which ...
Kenchington, C. G. +2 more
core +1 more source
Multiple branching and attachment structures in cloudinomorphs, Nama Group, Namibia [PDF]
, 2020 The Ediacaran-Cambrian cloudinomorphs, which include Cloudina, are the first putative skeletal metazoans. They have a benthic ecology and tubular, organic, or biomineralized stacked funnel morphologies but an unresolved phylogenetic affinity.
Amy Shore +28 more
core +2 more sources