Año
Autores / Publicación
Helenes Escamilla, J. (1984). Dinoflagellates from cretaceous to early tertiary rocks of the Sebastian Vizcaino Basin, Baja California, Mexico. Geology of the Baja California Peninsula, 39, 89-106. (ID: 3512) (E)
Helenes Escamilla, J. (1983). Evaluation of Jurassic-Cretaceous dinoflagellates in the Ascodinium-Ovoidinium complex. Micropaleontology, 29(3), 255-266. (ID: 8188) (E)
Helenes Escamilla, J. (1980). Stratigraphy, depositional enviroments and foraminifera of the Miocene Tortugas formation Baja California Sur, Mexico. Boletín de la Sociedad Geológica Mexicana, XLI(1 y 2), 47-67. (ID: 3509) (E)
Helenes Escamilla, J., & Ingle, J. C. J. (1979). Stratigraphy, foraminifera, and depositacional enviroments of the Miocene Tortugas formation, Bja California, México. Baja California Geology, field guides and papers, 83-88. (ID: 3515) (E)