Results 51 to 60 of about 340 (144)

Análises estatísticas de Cloudina spp. no sul da faixa Paraguai e Namíbia. E suas implicações filogenéticas e evolutivas. [PDF]

, 2018
No presente trabalho foram analisadas amostras de mão (carbonatos) provenientes da Formação Tagatiya Guazú, Grupo Itapucumí Paraguai (extremo sul da Faixa Dobrada Vallemí) e da Formação Tamengo Grupo Corumbá Brasil (Sul da Faixa Paraguai) todas do final ...
Pedro Carlos Strikis, Strikis, Pedro Carlos   +1 more
openaire   +2 more sources

Facies analysis, sequence stratigraphy and chemostratigraphy of the Sete Lagoas Formation (Bambui Group), northern Minas Gerais State, Brazil: evidence of a cap carbonate deposited on the Januária basement high

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, Alexandre Uhlein, Gabriel Jube Uhlein, Alcides Nobrega Sial, Antônio Carlos Pedrosa-Soares, Otávio Nunes Borges de Lima   +5 more
doaj   +1 more source

Detrital zircon and apatite U-Pb geochronology of Ediacaran fossil–bearing strata spanning the late Ediacaran–Cambrian boundary in central Iran

, 2022
The Neoproterozoic successions exposed in the Koushk and Chahmir areas of central Iran include both volcanic, and shallow to deep marine siliciclastic and carbonate units. We obtained detrital zircon dates from tuffaceous shales bearing Ediacaran fossils,
Ulf Linnemann (810885), Farnoosh Farjandi (4616527), Michael Hall (117887), Patricia Vickers-Rich (322872), Massimo Raveggi (8597949), Thomas H. Rich (7483094), Mandy Hofmann (810888)   +6 more
core   +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, Marly Babinski   +1 more
doaj   +1 more source

Environmental context for the terminal Ediacaran biomineralization of animals [PDF]

, 2016
"In terminal Ediacaran strata of South China, the onset of calcareous biomineralization is preserved in the paleontological transition from Conotubus to Cloudina in repetitious limestone facies of the Dengying Formation.
J. D. Schiffbauer, Peng, Yongbo, H. Cao, Cao, Hansheng, Min, Xiao, Xiao, Shuhai, S. Peek, Kaufman, A.J., Martin, A.J., Peek, Sara, Liu, X.-M., S. Xiao, X.‐M. Liu, A. J. Martin, Cui, Huan, Peng, Y., Liu, Xiaoming, Xiao, S., Schiffbauer, J.D., Schiffbauer, J. D., A. J. Kaufman, Schiffbauer, James D., Martin, A. J., H. Cui, Kaufman, Alan Jay, X. Min, Kaufman, A. J., Y. Peng, Z. Siegel, Peek, S., Cao, H., Min, X., Martin, Aaron James, Cai, Yaoping, Cui, H., Siegel, Zakri., Y. Cai, Cai, Y., Liu, X. M., Siegel, Z.   +39 more
core   +1 more source

O registro fossilífero de metazoários ediacaranos na América do Sul e suas implicações nos estudos sobre origem e complexificação da vida animal

Geologia USP. Série Científica, 2013
O Período Ediacarano marca o aparecimento dos primeiros organismos macroscópicos complexos no registro fóssil. Evidências atuais indicam que a biota de Ediacara é composta tanto por animais quanto por grupos de protistas gigantes extintos, além de algas ...
Bruno Becker Kerber, Ana Lucia Zucatti da Rosa, Sandra Garcia Gabas, Juliana de Moraes Leme, Mírian Liza Alves Forancelli Pacheco   +4 more
doaj  

A deep root for the Cambrian Explosion: implications of new bio- and chemostratigraphy from the Siberian Platform [PDF]

, 2017
Much uncertainty remains as to the temporal relationship between the Ediacaran and Cambrian biotas, yet this is critical to our understanding of the rise of metazoans.
Zhuravlev, Andrey, F. Zhao, Zhao, Fangchen, M. Zhu, R.A. Wood, Wood, Rachel, Zhu, Mao-yan, Sokhov, Sergey, S.S. Sukhov, A.Yu. Zhuravlev   +9 more
core   +1 more source

Micropaleontologia da formação tamengo, eco parque cacimba da saúde, ediacarano, grupo corumbá, estado de Mato Grosso do Sul, Brasil [PDF]

, 2014
Dissertação (mestrado)—Universidade de Brasília, Instituto de Geociências, Programa Pós-Graduação em Geologia, 2014.A Formação Tamengo destaca-se devido ao seu conteúdo fossilífero, que abrange microfósseis de parede orgânica (palinomorfos ...
Tobias, Thais Cardoso
core  

Sequence stratigraphy and biostratigraphy of the lower member of the Deep Spring Formation: Implications for the Neoproterozoic-Cambrian boundary in the Basin and Range Province, western United States

, 2000
The Deep Spring Formation of the southern Basin and Range Province provides information valuable in locating and correlating the Precambrian-Cambrian boundary in western North America.
Parsons, Shannon Michelle
core   +1 more source

Exceptional soft tissue preservation reveals a cnidarian affinity for a Cambrian phosphatic tubicolous enigma. [PDF]

Proc Biol Sci, 2022
Zhang G, Parry LA, Vinther J, Ma X.
europepmc   +1 more source