Drepanophycus Spinaeformis: A Long-ranging Devonian Lycopod |
Contents
MATERIALS AND METHODS | 15 |
HISTORY OF DREPANO PHYCUS SPINAEFORMIS | 20 |
GEOGRAPHIC DISTRIBUTION OF DREPANOPHYCUS SPINAEFORMIS | 25 |
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Common terms and phrases
Allen and Friend Amer apparatus from locality appear approximately arranged axes axis Banks bear beds border Brown Canada Catskill channel clear collected consists Cornell cuticle cuticular deposited detail Dimensions of Stomatal Drepanophycus spinaeformis elongate epidermal cells examined extends face view facies falcate Figs Figure five flora Formation fossil genus Geol Grierson guard cells illustrated impressions interpretation isolated Kräusel and Weyland Lang leaf bases leaves locality Lower Devonian lycopods Macerated marine material measure Middle modifications Mountain Number outer outline Paracytic stomatal apparatus parallel placed plain plant poral walls pore present preserved projecting radial walls range range in length region reported representing ridge ring rock sandstone seen shales shape single Slide sometimes species specimens sporangia stem strand strata streams subsidiary cells suggests surface TABLE thickening tion University Upper Devonian usually vary vascular visible West width York