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Preservation of Early Cambrian animals of the Chengjiang biota
The Chengjiang biota of Yunnan, China, documents the earliest extensive radiation of the Metazoa recorded in the fossil record. Gauging preservational bias is crucial in providing an assessment ofExpand
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The Systematics and phylogenetic relationships of vetulicolians
Abstract:  Vetulicolians have variously been considered to be unusual arthropods, stem-group deuterostomes or relatives of the tunicates. They are known from a number of Cambrian Lagerstatten, andExpand
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Mechanism for Burgess Shale-type preservation
Exceptionally preserved fossil biotas of the Burgess Shale and a handful of other similar Cambrian deposits provide rare but critical insights into the early diversification of animals. TheExpand
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The Apparatus Architecture and Function of Promissum pulchrum Kovacs-Endrody (Conodonta, Upper Ordovician) and the Prioniodontid Plan
More than 100 complete apparatuses of the conodont Promissum pulchrum have been collected as natural assemblages on bedding surfaces of the Soom Shale Member, Cedarberg Formation, South Africa.Expand
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Decay of vertebrate characters in hagfish and lamprey (Cyclostomata) and the implications for the vertebrate fossil record
The timing and sequence of events underlying the origin and early evolution of vertebrates remains poorly understood. The palaeontological evidence should shed light on these issues, but difficultiesExpand
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The impact of taphonomic data on phylogenetic resolution: Helenodora inopinata (Carboniferous, Mazon Creek Lagerstätte) and the onychophoran stem lineage
BackgroundThe origin of the body plan of modern velvet worms (Onychophora) lies in the extinct lobopodians of the Palaeozoic. Helenodora inopinata, from the Mazon Creek Lagerstätte of IllinoisExpand
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Sedimentation of the Phyllopod Bed within the Cambrian Burgess Shale Formation of British Columbia
We provide the most detailed sedimentological log to date through the Phyllopod Bed of the mid-Cambrian Burgess Shale Formation of British Columbia, based on millimetre-scale logging of a suite ofExpand
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Non-random decay of chordate characters causes bias in fossil interpretation
Exceptional preservation of soft-bodied Cambrian chordates provides our only direct information on the origin of vertebrates. Fossil chordates from this interval offer crucial insights into how theExpand
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Preservation of fossils in clay minerals; a unique example from the Upper Ordovician Soom Shale, South Africa
SUMMARY In the Soom Shale, labile soft tissues have been replaced rapidly after death by authigenic clay minerals which now have an illitic composition. There are two possible pathways for thisExpand
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