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The late Proterozoic acritarch Chuaria circularis (Walcott) Vidal and Ford

Published online by Cambridge University Press:  14 July 2015

Gonzalo Vidal
Gonzalo Vidal*
Affiliation:
Geology Department, Micropaleontology Laboratory, University of Lund, Box 124, S-221 00 Lund, Sweden
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Extract

Vidal and Ford (1985) described a rich, well-preserved acritarch biota from the late Proterozoic Chuar Group in northern Arizona. The biota includes Chuaria circularis (Walcott) Vidal and Ford, whose diagnosis was emended. A SEM micrograph of a specimen supposedly deriving from the Kwagunt Formation of the Chuar Group was included (Vidal and Ford, 1985, p. 357). However, the figured specimen derives from the Late Proterozoic Eleonore Bay Group in east Greenland (Vidal, 1979, Pl. 4, a, b) and was erroneously included as a consequence of an inadvertent replacement of films during the preparation of paper prints for publication. The author of this note alone bears responsibility for this regrettable mistake.

Type
Taxonomic Notes
Information
Journal of Paleontology , Volume 64 , Issue 3 , May 1990 , pp. 488
Copyright
Copyright © The Paleontological Society 

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References

Ford, T. D., and Breed, W. J. 1973. The problematical Precambrian fossil Chuaria. Palaeontology, 16:535–550.Google Scholar
Vidal, G. 1979. Acritarchs from the Upper Proterozoic and Lower Cambrian of East Greenland. Gr⊘nlands Geologiske Unders⊘gelse Bulletin 134, 55 p.CrossRefGoogle Scholar
Vidal, G., and Ford, T. D. 1985. Microbiotas from the Late Proterozoic Chuar Group (northern Arizona) and Uinta Mountain Group (Utah) and their chronostratigraphic implications. Precambrian Research, 28:349–389.CrossRefGoogle Scholar
Walcott, C. D. 1899. Precambrian fossiliferous formations. Geological Society of America Bulletin, 10:199–244.CrossRefGoogle Scholar