Brustur, Titus. " Ubinia jipai n. isp. and Megagrapton isp. (Graphoglyptida) in the middle member of the Sinaia formation (Upper Berriasian-Lower Hauterivian) from Prahova Valley (Romania)." Geo-Eco-Marina [Online], 28 (2022): 89-99. Web. 21 Apr. 2024