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Spechts Ferry (Middle Ordovician) bryozoan fauna from Illinois, Wisconsin, and Iowa.

Author(s): Perry, Thomas G.
Contributor(s): Biodiversity Heritage Library
Collection(s): Biodiversity Heritage Library
Category: Others
Subject(s): Bryozoa, Fossil. , Paleontology--Ordovician. , Paleontology--Middle west.

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The upper Ordovician rocks of Kentucky and their bryozoa.

Studies on the Cyclostomata Operculata.

Redescription of type specimens of species of the bryozoan genera Monticulipora, Mesotrypa, Peronopora, and Prasopora, from the upper Ordovician rocks of Toronto and vicinity, Ontario, Canada

North American early Tertiary Bryozoa

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