Abstract
AbstractA large number of Dicroidium-frond, considered as the marker of Early Triassic Gondwana flora, are discovered for the first time with well preserved cuticle from Early Permian (Lower Gondwana) sequence of Barakar Formation, Satpura Gondwana Basin, India. The presence of Dicroidium in Late Permian mixed floral zone of Jordan has been viewed as its possible origin in paleotropics but the evidence in hand exhibits its Gondwanic derivation and threatens the recognition of Dicroidium flora for Middle Gondwana in association with Lower Gondwana Glossopteris and Upper Gondwana Ptilophyllun flora.
Highlights
Large number of Dicroidium- frond considered as the marker of Early Triassic Gondwana flora is discovered for the first time with well preserved cuticle from Early Permian (Lower Gondwana) sequence of Barakar Formation, Satpura Gondwana Basin, India
Plant fossils were collected from carbonaceous shales, grey to white coloured sandstones overlying and underlying tSheethcioaaolpseenamcasntoc. oIaAl m, Bine&(2C2oo1f2Ba4r9á′́knarorFthorlmataittuiodne ( Early Permian) exposed in New and 78° 50 ̋ 44′ east longitude) of
The plant fossils are represented by well preserved carbonized compression of Dicroidium fronds along with the Early Permian Gondwana plant fossils of Gangamopteris, Glossopteris, Noeggerathiopsis, Buriadia, Arberia, Ottokaria, Arberiella-sporangium, seeds of Samaropsis and Cordaicarpus[2]
Summary
Large number of Dicroidium- frond considered as the marker of Early Triassic Gondwana flora is discovered for the first time with well preserved cuticle from Early Permian (Lower Gondwana) sequence of Barakar Formation, Satpura Gondwana Basin, India. The frond of Dicroidium Gothan is characterized by forked axis and there are many genera which are based on minor characters are related with the genus[5,6,7].
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