Preliminary Investigation of Two Late Triassic Conifers from York County, Pennsylvania
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.
KeywordsSeed Cone Leafy Shoot Epidermal Hair Ovuliferous Scale Ovuliferous Cone
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