Results 111 to 120 of about 392 (143)
Inconsistencies in proposed annelid affinities of early biomineralized organism Cloudina (Ediacaran): structural and ontogenetic evidences [PDF]
Carnets De Geologie, 2012 Cloudina, un important fossile ediacarien, est considere comme l'un des pre-miers organismes biomineralises. Ses affinites biologiques n'ont pas encore ete entierement elucidees : des relations phylogenetiques avec les annelides et les cnidaires sont habituellement envisagees.
Michał Zatoń, Olev Vinn
exaly +4 more sources
The puzzle assembled: Ediacaran guide fossil Cloudina reveals an old proto-Gondwana seaway [PDF]
Geology, 2014 ABSTRACTDuring the Ediacaran the Clymene Ocean separated the Lau-rentia, Amazonia, and Rio Apa cratons from several landmasses to the west forming the proto-Gondwana supercontinent. However, no clear evidence about the existence of Ediacaran epeiric seas over those landmasses has been found.
Claudio Riccomini +2 more
exaly +5 more sources
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Skeletogenesis and asexual reproduction in the earliest biomineralizing animal Cloudina
Geology, 2005The tubular fossil Cloudina is emerging as an important Ediacaran index fossil. How- ever, its morphology, skeletogenesis, reproduction, and phylogenetic affinity have not been fully resolved. New material from the Dengying Formation of south China confirms that Cloudina tubes consist of eccentrically and sometimes deeply nested funnels and that the ...
Xunlai Yuan, Shuhai Xiao
exaly +2 more sources
New materials reveal Shaanxilithes as a Cloudina-like organism of the late Ediacaran
Precambrian Research, 2021Abstract Shaanxilithes is a potential index fossil of late Ediacaran for its cosmopolitan occurrences and narrow stratigraphic range. However, its morphology and taxonomy has long been controversial and its biological affinities remain problematic, with interpretations ranging from pogonophorans, sedimentary structures, trace fossils, algae, to ...
Xin Wang +4 more
openaire +1 more source
A new species of Cloudina from the terminal Ediacaran of Spain
Precambrian Research, 2010Abstract The terminal Ediacaran genus Cloudina includes some of the earliest biomineralized fossils. It consists of a tube formed by stacked funnel-shaped elements, and is usually interpreted as the external skeleton of an early metazoan. Although a number of species have been described within this genus, their distinctiveness remains unclear and ...
Cortijo Sánchez, Iván +3 more
openaire +2 more sources
Precambrian Research, 2020
Abstract The Navalpino anticline of the Central Iberian Zone provides a unique case study of well-exposed late Ediacaran reefs. Drone images show their spatial arrangement as tens of shelly-microbial patch, biohermal and complex reefs encased in a dominantly shaly succession.
Álvaro Blasco, José Javier +4 more
openaire +2 more sources
Abstract The Navalpino anticline of the Central Iberian Zone provides a unique case study of well-exposed late Ediacaran reefs. Drone images show their spatial arrangement as tens of shelly-microbial patch, biohermal and complex reefs encased in a dominantly shaly succession.
Álvaro Blasco, José Javier +4 more
openaire +2 more sources
Taxonomy of the late Ediacaran index fossil Cloudina and a new similar taxon from South China
Precambrian Research, 2017Abstract Cloudina is a late Ediacaran tubular fossil known from almost every continent. It is typically a mm- to cm-sized conical tube consisting of multiple, nested, funnel-shaped elements, forming the diagnostic “funnel-in-funnel” tube construction.
Yaoping Cai +3 more
openaire +1 more source
2023
The late Ediacaran witnessed rapid turnover of organisms. As one of the earliest biomineralizing animal fossils，Cloudina has greatimplication on the evolution of complex macroscopic organisms . With a relatively stable and wide distribution, Cloudina has become one of the most important indicator fossils of the late Ediacaran. Located in the
Jinzhou Luo, Hong Hua, Qiaokun Dai
openaire +1 more source
The late Ediacaran witnessed rapid turnover of organisms. As one of the earliest biomineralizing animal fossils，Cloudina has greatimplication on the evolution of complex macroscopic organisms . With a relatively stable and wide distribution, Cloudina has become one of the most important indicator fossils of the late Ediacaran. Located in the
Jinzhou Luo, Hong Hua, Qiaokun Dai
openaire +1 more source
Some observations on Cloudina, a terminal Proterozoic index fossil from Namibia
Journal of African Earth Sciences, 2001An overview is provided of past and present concepts about Cloudina, a Neoproterozoic tube-building organism, significant for its early use of biomineralisation. In the past, Cloudina tubes from the Nama limestones of Namibia have had to be studied in thin- or polished sections, but some observations are reported here on silicified tubes extracted ...
openaire +1 more source
With special tubular and skeletal bauplan, Ediacaran tubular fossils are one unique metazoan group that has irreplaceable significance for our understanding of the early metazoan evoution. However, their biological affinities have long been disputed because of their limited morphological features and ambiguous primary composition.
Xinjie Wang, Ben Yang
openaire +1 more source
Xinjie Wang, Ben Yang
openaire +1 more source