6 Result(s)
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Article
Open AccessPreservation of early Tonian macroalgal fossils from the Dolores Creek Formation, Yukon
The rise of eukaryotic macroalgae in the late Mesoproterozoic to early Neoproterozoic was a critical development in Earth’s history that triggered dramatic changes in biogeochemical cycles and benthic habitats...
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Open AccessGlobal controls on phosphatization of fossils during the Toarcian Oceanic Anoxic Event
Konservat-Lagerstätten—deposits with exceptionally preserved fossils—vary in abundance across geographic and stratigraphic space due to paleoenvironmental heterogeneity. While oceanic anoxic events (OAEs) may ...
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Open AccessUltrastructure of Ediacaran cloudinids suggests diverse taphonomic histories and affinities with non-biomineralized annelids
Cloudinids have long been considered the earliest biomineralizing metazoans, but their affinities have remained contentious and undetermined. Based on well-preserved ultrastructures of two taxa, we here propos...
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Open AccessDiscovery of bilaterian-type through-guts in cloudinomorphs from the terminal Ediacaran Period
The fossil record of the terminal Ediacaran Period is typified by the iconic index fossil Cloudina and its relatives. These tube-dwellers are presumed to be primitive metazoans, but resolving their phylogenetic i...
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Open AccessEdiacaran biozones identified with network analysis provide evidence for pulsed extinctions of early complex life
Rocks of Ediacaran age (~635–541 Ma) contain the oldest fossils of large, complex organisms and their behaviors. These fossils document developmental and ecological innovations, and suggest that extinctions he...
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Article
A unifying model for Neoproterozoic–Palaeozoic exceptional fossil preservation through pyritization and carbonaceous compression
Soft-tissue fossils capture exquisite biological detail and provide our clearest views onto the rise of animals across the Ediacaran–Cambrian transition. The processes contributing to fossilization of soft tis...
