Jain and Tandon, 1981
From dinoflaj3
Jain, K.P. and Tandon, K.K., 1981: Dinoflagellate and acritarch biostratigraphy of the Middle Eocene rocks of a part of south-western Kachchh, India. Journal of the Palaeontological Society of India, v.26, p.6-21, pl.1-4.