Results 31 to 40 of about 684 (155)

Chemo- and biostratigraphy of the Gaojiashan section (northern Yangtze platform, South China): a new Pc-C boundary section [PDF]

Fossil Record, 2015
The widespread, terminal Ediacaran Dengying Formation (~ 551–~ 542 Ma) of South China hosts one of the most prominent negative carbonate carbon isotope excursions in Earth's history and thus bears on the correlation of the Precambrian–Cambrian boundary ...
A. Gamper, U. Struck, F. Ohnemueller, C. Heubeck, S. Hohl   +4 more
doaj   +1 more source

Borings in Cloudina Shells: Complex Predator-Prey Dynamics in the Terminal Neoproterozoic

PALAIOS, 2003
Abstract Predation as an important driver of evolutionary change long has been assumed, despite difficulties to substantiate it with specific examples of predatory interaction, especially for the early Paleozoic diversification of animal life. This study corroborates the existence of shell-drilling predation in the uppermost Neoproterozoic of China ...
H. HUA, B. R. PRATT, L.-Y. ZHANG
openaire   +3 more sources

Correlations of some Neoproterozoic carbonate-dominated successions in South America based on high-resolution chemostratigraphy [PDF]

, 2016
Esta revisão incorpora novos dados isotópicos e químicos para correlação quimioestratigráfica de sucessões, predominantemente carbonáticas, na América do Sul (Argentina, Bolívia, Brasil, Paraguai e Uruguai).
Alvarenga, Carlos José Souza de, Boggiani, Paulo Cesar, Cezario, Wilker dos Santos, Chiglino, Leticia, Fernández Ramírez, Rodrigo, Ferreira, Valderez Pinto, Gaucher, Claudio, Geraldes, Mauro, Misi, Aroldo, Pedreira, José Augusto, Pereira, Natan Silva, Pimentel, Marcio Martins, Sial, Alcides Nobrega, Warren, Lucas Verissimo   +13 more
core   +2 more sources

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

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 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

Guía de campo post-congreso, 21-24 de Octubre de 2019: Ediacárico y Terreneuviense en los alrededores del Geoparque de la UNESCO Villuercas-Ibores-Jara

Estudios Geologicos, 2019
Una de las esquinas de los mapas geográficos que enlazan las provincias de Badajoz, Cáceres y Toledo contiene unos afloramientos claves para entender el tránsito Ediacárico-Cámbrico de la Zona Centroibérica. En los núcleos del Anticlinorio Extremeño y de
J. J. Álvaro, S. Jensen, T. Palacios
doaj   +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

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

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