Cloudina-Corumbella-Namacalathus association from the Itapucumi Group, Paraguay: Increasing ecosystem complexity and tiering at the end of the Ediacaran [PDF]
Precambrian Research, 2017 Abstract The intriguing Ediacaran fossil Namacalathus is described from limestones of the Tagatiya Guazu Formation, Itapucumi Group, Paraguay. This is the fifth occurrence of the genus in the Ediacaran geological record. The Paraguayan Namacalathus specimens are preserved as partially complete spheroidal cups with an opening at the top and thin ...
L. Warren +8 more
semanticscholar +6 more sources
Ediacaran metazoan fossil record from South America and its implications in the studies about origin and complexification of animal life [PDF]
Geologia USP. Série Científica, 2013 The Ediacaran Period marks the first appearance of complex macroscopic organisms in the fossil record. Current evidence indicates that Ediacara biota is composed of animals, groups of extinct giant protists, algae and other organisms without proven ...
Bruno Becker Kerber +4 more
doaj +1 more source
a new Pc-C boundary section [PDF]
, 2016 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 ...
Gamper, A. +4 more
core +1 more source
Análises estatísticas de Cloudina spp. no sul da faixa Paraguai e Namíbia. E suas implicações filogenéticas e evolutivas. [PDF]
, 2017 P. Strikis
semanticscholar +2 more sources
The ‘biomineralization toolkit’ and the origin of animal skeletons
Biological Reviews, Volume 95, Issue 5, Page 1372-1392, October 2020., 2020 ABSTRACT Biomineralized skeletons are widespread in animals, and their origins can be traced to the latest Ediacaran or early Cambrian fossil record, in virtually all animal groups. The origin of animal skeletons is inextricably linked with the diversification of animal body plans and the dramatic changes in ecology and geosphere–biosphere interactions
Duncan J. E. Murdock
wiley +1 more source
Frontiers in Earth Science, 2022 The Ediacaran is a period characterized by the diversification of early animals and extensive neritic carbonate deposits. These deposits are still not well understood in terms of facies and carbon isotope composition (δ13C). In this study we focus on the
Maria E. A. F. Ramos +10 more
doaj +1 more source
Estudios Geologicos, 2019 El Ediacárico terminal inlcuye una serie de cambios drásticos en los ciclos biogeoquímicos, muchos de los cuales se asocian con modificaciones evolutivas en los registros fósiles correspondientes.
H. Cui +20 more
doaj +1 more source
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 +4 more
doaj +1 more source
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 +13 more
core +2 more sources
First macrobiota biomineralization was environmentally triggered. [PDF]
Proc Biol Sci, 2017 Why large and diverse skeletons first appeared ca 550 Ma is not well understood. Many Ediacaran skeletal biota show evidence of flexibility, and bear notably thin skeletal walls with simple, non-hierarchical microstructures of either aragonite or high-Mg
Wood R, Ivantsov AY, Zhuravlev AY.
europepmc +3 more sources