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Title: The Early Cambrian trilobite family Emuellidae Pocock, 1970: Systematic position and revision of Australian species
Contributor(s): Paterson, John R  (author)orcid ; Edgecombe, Gregory D (author)
Publication Date: 2006
DOI: 10.1666/0022-3360(2006)80[496:TECTFE]2.0.CO;2
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Abstract: The family Emuellidae Pocock, 1970 was established for Emuella Pocock, 1970 and Balcoracania Pocock, 1970 from the Lower Cambrian of South Australia. Based on their peculiar trunk tagmosis, emuellids have been interpreted as the sister group of all other trilobites with dorsal facial sutures, and classified as high as the ordinal level. Cladistic analysis with a range of exemplar taxa of the Olenellina and Redlichiina instead resolves the emuellids within the Redlichiina, with tagmosis into a prothorax and opisthothorax ("telosoma") nonhomologous in olenellines and emuellids. A taxonomic revision of Australian species identifies Balcoracania flindersi as a junior subjective synonym of B. dailyi, whereas the two named species of Emuella are considered to be distinct. Balcoracania dailyi possesses up to 103 thoracic segments, the maximum number recorded in any trilobite
Publication Type: Journal Article
Source of Publication: Journal of Paleontology, 80(3), p. 496-513
Publisher: Paleontological Society
Place of Publication: Lancaster, United States
ISSN: 1937-2337
Field of Research (FOR): 040308 Palaeontology (incl Palynology)
060301 Animal Systematics and Taxonomy
060309 Phylogeny and Comparative Analysis
Socio-Economic Outcome Codes: 970104 Expanding Knowledge in the Earth Sciences
970106 Expanding Knowledge in the Biological Sciences
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
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