Article: Marcouia, gen. nov., a problematical plant from the Late Triassic of the southwestern U.S.A.
Sidney R. Ash
Marcouia, gen. nov. has large palmately compound leaves in which the pinnae are deeply divided into linear, lateral segments. The segments (pinnules ?) contain broad midribs and parallel veins that often divide and anastomose one or more times before reaching the margins. Leaves from the Chinle Formation that were formerly referred to as Ctenis are here assigned to Marcouia. Marcouia is not classified and is known only from the lower part of the Upper Triassic Chinle Formation in eastern Arizona and western New Mexico.