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Jujuyaspis and associated trilobites from the Mungok Formation (Lower Ordovician), Yongwol, Korea

Published online by Cambridge University Press:  20 May 2016

Dong Hee Kim  and
Duck K. Choi
Dong Hee Kim
Affiliation:
Department of Geological Sciences, Seoul National University, Seoul 151-742, Korea, <(dkchoi@snu.ac.kr)>
Duck K. Choi
Affiliation:
Department of Geological Sciences, Seoul National University, Seoul 151-742, Korea, <(dkchoi@snu.ac.kr)>
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Abstract

The trilobite genus Jujuyaspis Kobayashi, 1936, an index fossil of earliest Ordovician age, is recorded from the Yosimuraspis Zone of the Mungok Formation (Lower Ordovician) for the first time in Korea. The Yosimuraspis Zone comprises Yosimuraspis vulgaris Kobayashi, 1960; Jujuyaspis sinensis Zhou in Chen et al., 1980; Elkanaspis jilinensis Qian in Chen et al 1985; and pilekid genus and species indeterminate. Closely comparable faunas to the Yosimuraspis Zone are well represented in North China. The occurrence of Jujuyaspis allows the correlation of the Yosimuraspis Zone with the earliest Ordovician faunas of North America, South America, and Scandinavia, and suggests that the Cambrian-Ordovician boundary in Korea be placed at the base of the Yosimuraspis Zone.

Type
Research Article
Information
Journal of Paleontology , Volume 74 , Issue 6 , November 2000 , pp. 1031 - 1042
Copyright
Copyright © The Paleontological Society

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