Conkin, J. E.; Conkin, B. M.; McDonald, D. (1963). Mississippian Smaller Foraminifera from the Southern Peninsula of Michigan. Micropaleontology. 9(2): 215.

285805

10.2307/1484569 [view]

Conkin, J. E.; Conkin, B. M.; McDonald, D.

1963

9(2): 215

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Eight genera and nine species of foraminifera are recorded from the Lower Mississippian Coldwater shale of Michigan. The most abundant species is the Osagian Hyperammina kentuckyensis, and most of the Coldwater is also considered to be Osagian. The genus Ceratammina is recognized outside the Devonian system for the first time. The Coldwater sediments were deposited in relatively cool waters. Depth of water was probably greater in Branch, Hillsdale and southern Huron Counties than in northern Huron County

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