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- '''Figure 59''' Conceptual model of Pangea during a glacial episode of the Pennsylvanian. From Cecil, C.B., F.T. Dulong, R.R. West, R. Stamm, B. Wardlaw, and N.T. Edgar, 2003b, Climate controls on the stratigraphy of a Middle Pennsylvanian cyclothem in North America, in C.B. Cecil and N.T. Edgar, eds., Climate controls on stratigraphy: SEPM Special Publication 77, p. 151–180. Copyright © 2003, used with permission of SEPM; permission conveyed through Copyright Clearance Center, Inc. ITCZ, intertropical convergence zone.
- '''Figure 60''' Conceptual model of Pangea during an interglacial episode of the Pennsylvanian. From Cecil, C.B., F.T. Dulong, R.R. West, R. Stamm, B. Wardlaw, and N.T. Edgar, 2003b, Climate controls on the stratigraphy of a Middle Pennsylvanian cyclothem in North America, in C.B. Cecil and N.T. Edgar, eds., Climate controls on stratigraphy: SEPM Special Publication 77, p. 151–180. Copyright © 2003, used with permission of SEPM; permission conveyed through Copyright Clearance Center, Inc. ITCZ, intertropical convergence zone.