Badve, R. M. “Occurrence of Pycnodonte (Phygraea) in the Navania Limestone, Wadhwan Formation, Saurashtra and Its Ecological Significance”. Journal of Geological Society of India 19, no. 4 (April 1, 1978): 172–173. Accessed September 20, 2024. https://geosocindia.com/index.php/jgsi/article/view/64164.