Three New Devonian Species of Microcyclus from Michigan and Ontario

Three new species of Microcyclus are described and illustrated. One is from the Arkona shale and the second from the Hungry Hollow formation, both Middle Devonian of the Thedford region, Ontario. The third is from the Middle Devonian Alpena limestone of the Traverse group, Alpena, Michigan. Hypotype...

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Bibliographic Details
Published in:Journal of paleontology 1949-09, Vol.23 (5), p.507-509
Main Author: Stumm, Erwin C.
Format: Article
Language:English
Subjects:
Discuses
Holotypes
Scars
Shales
Online Access:Get full text
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Description
Summary:Three new species of Microcyclus are described and illustrated. One is from the Arkona shale and the second from the Hungry Hollow formation, both Middle Devonian of the Thedford region, Ontario. The third is from the Middle Devonian Alpena limestone of the Traverse group, Alpena, Michigan. Hypotypes of Microcyclus discus Meek and Worthen, the genotype species, and of M. thedfordensis Bassler are illustrated.
ISSN:0022-3360
1937-2337