Matsumaru, K. (2017). Larger Foraminifera from the Philippine Archipelago. <em>Micropaleontology.</em> 63(2-4): 77-253. page(s): p. 8 [details] Available for editors [request]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2025). World Foraminifera Database. Orientorbitoides Matsumaru, 2017 †. Accessed at: https://marinespecies.org/foraminifera/aphia.php?p=taxdetails&id=1398452 on 2025-05-24
original descriptionMatsumaru, K. (2017). Larger Foraminifera from the Philippine Archipelago. <em>Micropaleontology.</em> 63(2-4): 77-253. page(s): p. 8 [details] Available for editors [request]