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A new early Cambrian bradoriid (arthropoda) from East Antarctica
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ABSTRACT-Although bradoriids locally are common components of the Cambrian biota, they have been reported previously from Antarctica only from Tertiary glacial deposits. Here, we describe the bradoriid, Bicarinella evansi new genus and species, collected in situ from the upper Lower Cambrian (Botomian) of the Pensacola Mountains in East Antarctica. Bicarinella evansi n. gen and sp. is characterized by a subtriangular carapace with a well-defined marginal rim, subequal anterior and posterior l...
Related newspaper, magazine, and journal articles from HighBeam Research
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A new early Cambrian bradoriid (arthropoda) from East Antarctica
Journal of Paleontology
; ABSTRACT-Although bradoriids locally are common components of the Cambrian biota, they have been reported previously from Antarctica only from Tertiary glacial deposits. Here, we describe the bradoriid, Bicarinella evansi new genus and species, collected in situ from the upper Lower Cambrian
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A NEW GENUS OF EARLY CAMBRIAN CORAL IN ESMERALDA COUNTY, SOUTHWESTERN NEVADA
Journal of Paleontology
; ABSTRACT- Numerous Early Cambrian corals or "coralomorphs," as they are often classified, are recorded from North America, Australia, and Siberia. A new Early Cambrian coral, Harklessia yuenglingensis n. gen. and sp., is found in conjunction with archaeocyathan-microbial reefs in Esmeralda County,
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Tragedy found in Cambrian carnival. (evidence of mass extinction of animals) (Brief Article)
Science News
; Paleontologists have come to view the early Cambrian period as an evoluntionary field day -- a time when the first complex animals exploded onto the scene, filling the seas with a rich assortment of life. But new research reveals that a wave of extinctions may have hit right in the middle of this
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Crusty crustacean
Natural History
; Crustaceans are a Large and varied crew, with some 39,000 species Living today and many more known from their fossil remains. The oldest fossil crustaceans date back to the Late Cambrian Epoch, between 512 and 505 million years ago. Now a team of paleontologists has found a fossilized arthropod
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Testing the Darwinian legacy of the Cambrian radiation using Trilobite phylogeny and biogeography
Journal of Paleontology
; ABSTRACT-Since the publication of Darwin (1859), the biological meaning of the Cambrian radiation has been debated. Most commentators agree, however, that the Cambrian radiation is fundamentally a time of major metazoan cladogenesis. In and of itself this does not necessarily mean that unique
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A palaeomagnetic and palaeobiogeographical perspective on latest Neoproterozoic and early Cambrian tectonic events
Journal of the Geological Society
; Abstract: During the latest Neoproterozoic to Mid-Cambrian time (580-505 Ma ago), the Earth underwent significant changes in palaeogeography that included rifting of a possible supercontinent and the near simultaneous formation of a second, slightly smaller supercontinent. It is against this
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Cambrian palaeomagnetic data from Baltica: Implications for true polar wander and Cambrian palaeogeography
Journal of the Geological Society
; Abstract: A reliable Early Cambrian (c. 535 Ma) and a preliminary Late Cambrian (c. 500 Ma) palaeomagnetic pole from Baltica (Sweden) overlap within uncertainty, and they are also broadly compatible with Vendian (c. 583 Ma) palaeomagnetic data. Apparent polar wander for Baltica amounts to less than
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New sites of Chengjiang fossils: Crucial windows on the Cambrian explosion
Journal of the Geological Society
; Abstract: Soft-bodied and lightly sclerotized Chengjiang fossils have been found at more than ten new localities in the Lower Cambrian Qiongzhusi and Canglangpu formations of east central Yunnan. At the same time, three different fossil assemblages have been recognized, i.e. Kunmingella
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Early Cambrian location and affinities of the Brunovistulian terrane (Central Europe) in the light of palaeomagnetic data
Journal of the Geological Society
; Abstract: The Brunovistulian was one of the first tectonic units of Central Europe to be defined as a 'terrane'. In spite of extensive studies, the Early Palaeozoic palaeogeographical position and provenance of this unit remains unclear. A palaeomagnetic study of the Lower Cambrian red beds and a
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Phylogenetic analysis of some basal early Cambrian trilobites, the biogeographic origins of the Eutrilobita, and the timing of the Cambrian radiation
Journal of Paleontology
; ABSTRACT-This paper presents a phylogenetic analysis of the "Fallotaspidoidea," a determination of the biogeographic origins of the eutrilobites, and an evaluation of the timing of the Cambrian radiation based on biogeographic evidence. Phylogenetic analysis incorporated 29 exoskeletal characters
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