Wheeler and Sarjeant, 1990
From dinoflaj3
Wheeler, J.W. and Sarjeant, W.A.S., 1990: Jurassic and Cretaceous palynomorphs from the central Alborz Mountains, Iran: their significance in biostratigraphy and palaeogeography. Modern Geology, v.14, no.4, p.267-374, pl.1-22.