california academy of sciences geology: Anomoenesis sphaerophora minor
california academy of sciences geology: Campylodiscus prentissi
california academy of sciences geology: Denticula rainierensis
california academy of sciences geology: Diploneis stauroneiformis
california academy of sciences geology: Frustulia rhomboides occidentalis
california academy of sciences geology: Gomphocymbella meulleri
california academy of sciences geology: Gomphocymbella tanganyikae
california academy of sciences geology: Gomphoneis quadripunctata var. cochleariformis
california academy of sciences geology: Gomphoneis quadripunctata var. miocenica
california academy of sciences geology: Gomphonema leptocampum
california academy of sciences geology: Gomphonema medio-inflatum
california academy of sciences geology: Gomphonema medio-inflatum var. irregulare
california academy of sciences geology: Gomphonema semiaperatoides