Osamu Takahashi, Takumi Maekawa, Paulian Dumitrica, Phong Duc Nguyen, Toshifumi Komatsu. Latentifistularia and other radiolarian species from the lower Smithian (Lower Triassic) Lang Son Formation, NE Vietnam. Revue de Micropaléontologie. 2022. 75. 100610-100610