exclude without cards


Undatodiscus sheshukovae Lupikina 1984     [Link to DiatomBase]


Undatodiscus tubiformis Rubina, Lupikina et Khursevich in Lupikina, Khursevich & Rubina 1991     [Link to DiatomBase]


Undatodiscus variabilis (Lupikina) Lupikina 1984     [Link to DiatomBase]