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Two early mississippian seeds from the price formation of Southwestern Virginia

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Abstract

Lagenospermum imparirameum Arnold, originally described from a few specimens of cupulate seeds borne on two or three times dichotomous branches, is now shown to be borne on more complex branching systems. Details of the cupule and seed morphology are added and an emended diagnosis of the taxon is given. A new species,Gnetopsis hispida, is described as the third occurrence of this genus and the first occurrence in beds of Lower Mississippian Age in North America. The classification, evolutionary implications, and dispersal biology are discussed for each of the seeds

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Authors and Affiliations

  1. Department of Botany, University of North Carolina, 27514, Chapel Hill, NC

    Patricia G. Gensel

  2. Department of Biology, George Mason University, 22030, Fairfax, VA

    Judith E. Skog

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  1. Patricia G. Gensel
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  2. Judith E. Skog
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Funds for this research were available through National Science Foundation Grant BMS 74-18514.

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Gensel, P.G., Skog, J.E. Two early mississippian seeds from the price formation of Southwestern Virginia. Brittonia 29, 332–351 (1977). https://doi.org/10.2307/2806206

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