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Geobotany pp 165-172 | Cite as

Preliminary Investigation of Two Late Triassic Conifers from York County, Pennsylvania

  • Bruce Cornet

Abstract

Two conifers are briefly described and illustrated from a rich plant-bearing layer of late Carnian age from the middle New Oxford Fm., Gettysburg Basin, USA. Two types of leaf-bearing branch systems are assigned to Pagiophyllum diffusum (Emmons) nov. comb. and P. simpsonii Ash. Seed cones that I assign to Glyptolepis nov. sp.1 and cf. G. nov. sp. 2 were also found. Six cones of G. nov. sp. 1, bearing large ovoid winged seeds, were found attached to a branch bearing leaves of P. diffusum. Both types of leaves and cones possess the same hairy type of cuticle. A small, elongate pollen cone, also with a hairy cuticle, was recovered from the plant layer. This cone contains Patinasporites densus Leschik pollen. P. densus and a morphologically similar pollen type, Vallasporites ignacii Leschik, dominate the palynoflorule from the plant layer.

Keywords

Seed Cone Leafy Shoot Epidermal Hair Ovuliferous Scale Ovuliferous Cone 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Springer Science+Business Media New York 1977

Authors and Affiliations

  • Bruce Cornet
    • 1
  1. 1.Department of GeosciencesThe Pennsylvania State UniversityUniversity ParkUSA

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