Results 41 to 50 of about 848 (154)

Guía de campo pre-congreso, 17-18 de Octubre de 2019: Ediacárico, Paleozoico Inferior y panorámicas en el Geoparque de la UNESCO Villuercas-Ibores-Jara

Estudios Geologicos, 2019
Se describen y figuran aquí varias unidades estratigráficas características del tránsito Ediacárico-Cámbrico entre Guadalupe y Castañar de Ibor, al norte del Geoparque de Villuercas-Ibores-Jara (Cáceres).
S. Jensen, J. J. Álvaro, T. Palacios
doaj   +1 more source

The origin of animals: can molecular clocks and the fossil record be reconciled? [PDF]

, 2016
The evolutionary emergence of animals is one of the most significant episodes in the history of life, but its timing remains poorly constrained. Molecular clocks estimate that animals originated and began diversifying over 100 million years before the ...
Antcliffe, Antcliffe, Antcliffe, Antcliffe, Ax, Babcock, Bengtson, Benton, Benton, Boag, Bomfleur, Brocks, Brocks, Budd, Budd, Butterfield, Butterfield, Cai, Callow, Cannon, Carbone, Carrera, Chen, Chen, Chen, Clites, Collins, Cortijo, Cunningham, Dalziel, Darwin, de Robertis, Donoghue, dos Reis, dos Reis, dos Reis, Erwin, Erwin, Fedonkin, Fedonkin, Ferrier, Fortey, Gavryushkina, Gehling, Gehling, Germs, Glaessner, Gold, Gold, Gold, Grant, Graur, Grazhdankin, Grotzinger, Hagadorn, Heath, Hejnol, Hou, Hua, Huldtgren, Ivantsov, Ivantsov, Ivantsov, Jarvis, Jensen, Jensen, Knoll, Knoll, Knoll, Kocot, Laumer, Lee, Levinton, Liu, Liu, Liu, Liu, Love, Love, Maloof, Mariotti, Matz, Miranda, Moroz, Murdock, Muscente, Mángano, Narbonne, O'Reilly, O'Reilly, Penny, Peters, Peterson, Philippe, Pick, Pisani, Rigby, Rogov, Ronquist, Rouse, Ryan, Sansom, Schweitzer, Seilacher, Seilacher, Serezhnikova, Smith, Sperling, Sperling, Sperling, Srivastava, Tang, Tang, Telford, Van Iten, Van Iten, Van Iten, Vinn, Vinther, Waggoner, Wan, Warren, Wood, Wood, Wood, Xiao, Xiao, Xiao, Xiao, Yin, Yuan, Zhang, Zhang, Zhu, Zhuravlev   +134 more
core   +2 more sources

The Cambrian of the Iberian Peninsula : an overview [PDF]

, 2003
This work is a brief overview of the Cambrian in the Iberian Peninsula, along with an updated review of lithostratigraphic and biostratigraphic data. A Cambrian correlation chart between the different stratigraphical units that have been established in ...
Gozalo, R., Gámez Vintaned, J.A., Liñán, E., Mayoral, E., Palacios, T.   +4 more
core   +4 more sources

Cambrian explosion [PDF]

, 2011
Prema fosilnim nalazima, prije 550 milijuna godina došlo je do iznenadne pojave raznih organizacijskih skupina životinja i višestaničnosti. Nikada prije kambrija nije zabilježen takav nagli evolucijski pomak. Smatra se da je trajao oko 50 milijuna godina
Ivšić, Martina
core   +1 more source

Deep-water incised valley deposits at the ediacaran-cambrian boundary in southern Namibia contain abundant treptichnus pedum [PDF]

, 2012
Valley-filling deposits of the Nama Group, southern Namibia, record two episodes of erosional downcutting and backfill, developed close together in time near the Ediacaran-Cambrian boundary.
Abelson, John, Cohen, Phoebe A., Fischer, Woodward W., Grotzinger, John P., Hand, Kevin P., Jensen, Sören, Knoll, Andrew H., McLoughlin, Nicola, Metz, Joannah M., Tice, Michael M., Wilson, Jonathan P.   +10 more
core   +2 more sources

Reconstructing the reproductive mode of an Ediacaran macro-organism. [PDF]

, 2015
Enigmatic macrofossils of late Ediacaran age (580-541 million years ago) provide the oldest known record of diverse complex organisms on Earth, lying between the microbially dominated ecosystems of the Proterozoic and the Cambrian emergence of the modern
A Baddeley, A Baddeley, A Baddeley, AG Liu, AG Liu, AL Shanks, Alexander G. Liu, AM Penny, AP Benus, B Gaylord, B Gaylord, B Shen, C Fraley, Charlotte G. Kenchington, D Stoyan, DA Wood, E Landing, EJ McIntire, Emily G. Mitchell, GM Narbonne, GM Narbonne, GM Narbonne, GM Narbonne, H Hua, HJ Hofmann, J Besag, J Illian, Jack J. Matthews, JF Hoyal Cuthill, JG Gehling, JM Fragoso, K Araki, KJ Peterson, L Chen, M Berman, M Thomas, MA Fedonkin, MD Brasier, MD Brasier, ME Clapham, ME Clapham, ML Droser, NB Loosmore, Nicholas J. Butterfield, P Diggle, P Grabarnik, R Pélissier, SA Levin, SAF Darroch, SE Russo, SN Chiu, T Wiegand, T Wiegand, T Wiegand, T Wiegand, T Wiegand, X Yuan, Y Lin   +57 more
core   +4 more sources

Constraining the onset and environmental setting of metazoan biomineralization: the Ediacaran Nama Group of the Tsaus Mountains, Namibia [PDF]

, 2023
The advent of animal (metazoan) biomineralization marks a fundamental transition in Earth's history, facilitating the diversification of novel body plans as well as the biological control of carbonate sediment production, resulting in a permanent ...
Alexander, Ruaridh, Bowyer, Fred, Curtis, Andrew, Kaputuaza, Kavevaza, Ndeunyema, Junias, Uahengo, Collen-Issia, Wood, Rachel, Yilales Agelvis, Mariana   +7 more
core   +2 more sources

Caracterização tafonômica e estratigráfica de Cloudina lucianoi (Beurlen & Sommer, 1957) Zaine & Faircild, 1985, no Grupo Corumbá, ediacarano do sudeste do Brasil [PDF]

, 2011
Felipe van Enck Meira
semanticscholar   +2 more sources

Litoestratigrafía, Bioestratigrafía y Correlaciones de las Sucesiones Sedimentarias del Neoproterozoico-Cámbrico del cratón del Río de la Plata (Uruguay y Argentina)

Latin American Journal of Sedimentology and Basin Analysis, 2021
Se compara la lito- bio- y quimioestratigrafía de sucesiones sedimentarias del Neoproterozoico del Cratón del Río de la Plata, a saber: Grupo Arroyo del Soldado (GAS), Uruguay y Grupo Sierras Bayas - Formación Cerro Negro (GSB-FmCN) de Tandilia ...
Claudio Gaucher, Daniel G. Poiré, Lucía Gómez Peral, Leticia Chiglino   +3 more
doaj   +2 more sources

Updated stratigraphic framework and biota of the Ediacaran and Terreneuvian in the Alcudia-Toledo Mountains of the Central Iberian Zone, Spain

Estudios Geologicos, 2019
An updated stratigraphic subdivision of the Ediacaran and Terreneuvian in the Alcudia valley and the Toledo Mountains, Central Iberian Zone, is documented here.
J. J. Álvaro, I. Cortijo, S. Jensen, S. Lorenzo, A. P. Pieren   +4 more
doaj   +1 more source