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Journal of Paleontology; September 2002; v. 76; no. 5; p. 822-842; DOI: 10.1666/0022-3360(2002)076<0822:MCASCA>2.0.CO;2
© 2002 Paleontological Society
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MIDDLE CAMBRIAN (ACADIAN SERIES) CONOCORYPHID AND PARADOXIDID TRILOBITES FROM THE UPPER CHAMBERLAIN'S BROOK FORMATION, NEWFOUNDLAND AND NEW BRUNSWICK

DONG HEE KIM1,1, STEPHEN R. WESTROP1 and ED LANDING2

1 Oklahoma Museum of Natural History and School of Geology and Geophysics, University of Oklahoma, Norman 73072, swestrop{at}ou.edu
2 Center for Stratigraphy and Paleontology, New York State Museum, The State Education Department, Albany 12230

The Fossil Brook Member of the upper Chamberlain's Brook Formation is a thin (up to 14 m) but distinctive, unconformity-bound depositional sequence recognizable from Rhode Island to eastern Newfoundland in Avalonian North America. Its diverse trilobite fauna was first described more than century ago from the limestone-rich facies of the member in southern New Brunswick. However, the systematics, stratigraphic context, and biostratigraphic significance of these trilobites have remained poorly known. A revision of the conocoryphid and paradoxidid trilobites has been completed, and the taxa set into their stratigraphic context within the middle Middle Cambrian. The faunas of the Fossil Brook are assigned to the Eccaparadoxides eteminicus Zone of Avalon. Although biogeographic barriers between Avalon and Gondwana remained strong in the Middle Cambrian and few shared trilobite species are present, a generalized correlation of the E. eteminicus Zone into Gondwana is with the Badulesia tenera Zone of the Toushamian Stage in Morocco and the Badulesia Zone of the Caesaraugustian Stage in Spain.




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A. ZYLINSKA and M. MASIAK
Cambrian trilobites from Brzechow, Holy Cross Mountains (Poland) and their significance in stratigraphic correlation and biogeographic reconstructions
Geological Magazine, July 1, 2007; 144(4): 661 - 686.
[Abstract] [Full Text] [PDF]


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