Report of InvestigationsThe Survey, 1985 - Geology |
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abundant aculeatum Alethopteris cf Alethopteris decurrens Allegheny rocks Allegheny strata amoena Annularia galioides apex Asterophyllites longifolius biostratigraphic Bothrodendron minutifolium bracts Branch and Rocky Breathitt Brongniart Calamites cisti Calamites undulatus charaeformis CLAY COUNTY coal beds coal zone cone correlations Crookall Darrah Description Discussion eastern Kentucky Eremopteris gracilis Figure flora Formation of West fossil plants Geologist Gillespie Grannies Branch Illinois Jellico coal Kanawha Formation Lateral veins Laveine leaf cushions leaf scars Lepidodendron Lepidodendron cf Lepidostrobophyllum lanceolatum Lepidostrobus ornatus Lesquereux lobes lonchitica lower Allegheny lycopod Mariopteris nervosa mesophyll mid-vein Neuropteris gigantea Neuropteris heterophylla Neuropteris tenuifolia North America nule outcrops paleobotanical Pecopteris Pecopteris plumosa Pennsylvanian pinnae pinnule margins pinnules pith casts plant types Pottsville Principal Investigator pteridosperms rachis Rocky Branch shale siltstone species specimen Sphenophyllum cuneifolium Sphenopteris amonea Sphenopteris obtusiloba sporangia sporophylls stem surface Sternberg Stigmaria stratigraphic study area throughout the Westphalian Ulodendron majus Underclay veination West Virginia Westphalian wide