Kar, Ratan, and R.S. Singh. 2003. “First Occurrence of Fossil Paraphyses Resembling Acrostichum Linn. From the Lalitpur Intertrappean Sediments (Palaeocene), Uttar Pradesh, India”. Journal of Palaeosciences 52 ((1-3):81-85. https://doi.org/10.54991/jop.2003.1755.