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Devonian rocks of southeastern Michigan and northwestern Ohio, - George Marion Ehlers
Stratigraphy and structure of the Devonian rocks in southeastern Michigan and northwestern Ohio (The Annual geological excursion of the Michigan Geolo - George Marion Ehlers
Stratigraphy of the Niagaran series of the Northern Peninsula of Michigan (Papers on paleontology) - George Marion Ehlers
New species of the brachiopod Cyrtina from the Middle Devonian Hamilton strata of southwestern Ontario (Contributions from the Museum of Paleontology, - George Marion Ehlers
Francis de Castelnau's Essai sur le système silurien de l'Amérique septentrionale and the status of his Spirifer huroniensis (Michigan. University. - George Marion Ehlers
Revision of E.A. Strong's species from the Mississippian Point au Gres limestone of Grand Rapids, Michigan, (Contributions from the Museum of paleonto - George Marion Ehlers
Leioptera rafinesquii Hall and a new species of the genus from the Thedford-Arkona region of southwestern Ontario (University of Michigan. Museum of P - George Marion Ehlers
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