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Origins of multicellularity
tained under conditions that support stem cells. This highlights the fact that stochastic influences may be at work within stem-cell populations. Roesch and colleagues’ results will be crucial if theExpand
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Effaced preservation in the Ediacara biota and its implications for the early macrofossil record
Abstract: Ediacaran structures known as 'pizza discs' or Ivesheadia have long been considered enigmatic. They are amongst the oldest known members of the Ediacara biota, apparently restricted to theExpand
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Changing the picture of Earth's earliest fossils (3.5–1.9 Ga) with new approaches and new discoveries
Significance Precambrian fossils are essential for understanding the emergence of complex life. New analytical tools and new fossil discoveries are now changing the picture, allowing us to refine andExpand
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The architecture of Ediacaran Fronds
Abstract:  Ongoing discoveries of new rangeomorph fossils from the Ediacaran of Avalonia allow us to put forward a unified and approachable scheme for the description and phylogenetic analysis ofExpand
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Evolutionary relationships within the Avalonian Ediacara biota: new insights from laser analysis
Abstract: We report new high-resolution laser scanning of the type material for the earliest, complex Ediacaran genera Charnia, Bradgatia, Charniodiscus and Ivesheadia from Charnwood, UK, and compareExpand
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Charnia and sea pens are poles apart
Charnia from the Ediacara biota is here examined in terms of its growth and development. The Ediacara biota comes from the critical period of evolution just before the Cambrian Explosion and is keyExpand
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Early fossil record of Euarthropoda and the Cambrian Explosion
Euarthropoda is one of the best-preserved fossil animal groups and has been the most diverse animal phylum for over 500 million years. Fossil Konservat-Lagerstätten, such as Burgess Shale-typeExpand
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Abstract:  Correct interpretation of the Ediacara biota is critical to our understanding of the dramatic events at the base of the Cambrian. We review here the history of thought and examine newExpand
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Testing the protozoan hypothesis for Ediacaran fossils: a developmental analysis of Palaeopascichnus
The hypothesis that the Ediacara biota were giant protozoans is tested by considering the external morphology, internal organization, suggested fossil representatives and molecular phylogeny of theExpand
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Giving the early fossil record of sponges a squeeze
Twenty candidate fossils with claim to be the oldest representative of the Phylum Porifera have been re‐analysed. Three criteria are used to assess each candidate: (i) the diagnostic criteria neededExpand
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