Franconian (Late Cambrian) to Early Champlainian (Middle Ordovician) conodonts from the Cow Head Group, western Newfoundland

Fahraeus, LE.; Nowlan, GS.

Journal of Paleontology 522: 444-471

1978


ISSN/ISBN: 0022-3360
DOI: 10.2307/1303716
Accession: 018966732

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Abstract
Multielement conodont species (12) and 17 residual form spp. are reported from the Late Cambrian-Early Ordovician Cow Head Group of western Newfoundland. A new monotypic genus is described on the basis of a new species MACERODUS dianae. Two new subfamilies are proposed, DREPANODONTINAE and DREPANOISTODINAE. The recovered Late Cambrian and earliest Ordovician (Tremadocian) conodonts are typical of the North American Midcontinent Province whereas the Arenigian (? and earliest Llanvirnian) taxa are typical of the North Atlantic Province. Detailed correlations with western European chronostratigraphic units are proposed. Only a very poor correlation can be made with the conodont zones established in the North American midwest, emphasizing the difficulty of establishing correlation between cratonic and extra-cratonic conodont faunas.