PJB-2025-454
THE PALAEOBOTANICAL SYSTEMATICS OF THE EXTINCT PLANTS, CHEMICAL SIGNATURES OF THE PLANT FOLIAGES AND THE POSSIBLE DINOSAUR-PLANT INTERACTIONS IN THE COAL MINES , SOUTHEASTERN IRAN
Hossein Aftabi
Abstract
The reconstruction of palaeobotanical systematics of the preserved extinct plants in the coal mines explores new understanding on the plant systematics, palaeoclimate, and type of herbivorous dinosaurs. To clarify this, 16 coal samples from Kerman (Goud -e- Siah, Chah Kahnuiyah and Badamoiyah) and Zarand (Dasht-e-Khak) regions were studied for the palaeobotanical systematics and chemical signatures of the preserved coalified leaves. Field and laboratory data on the plant systematics were compared with the global Jurassic (201-161 million years ago) atlas of the extinct plants, revealing species of: Klukia exilis, Otozamites linearis, Cladophelbis kurtzii, Phlebopteris angustiloba, Pterophyllum gaeri, Podozamites distans, Otozamites harrisianus, Phlebopteris muensteri, Neocalamites jurakermanii and Equisetum jurakermanii. Palaecologically, those species, in particular the frequent association of Klukia exilis are reported to grow during the Jurassic time in warm, humid to semi-tropical climates in swampy and marshland forests. Chemically, the high carbon/nitrogen ratio up to 150.7 in the coalified foliages and leaves may indicate the presence of herbivorous dinosaurs or reptiles. Although there are few records of medium-sized dinosaurs from the family of Theropods in the Zarand coal horizons and shales, the relationship between the extinct plants and herbivorous dinosaurs in the Iranian Jurassic coal mining areas merits further investigations.
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