Van Heurck -- Synopsis des Diatomées de Belgique -- Index
| Anaulus | birostratus (Grunow) Grunow | Page -- | Plate 103 | Figure1,2 | |
| Anaulus | birostratus var. [Grunow] | Page -- | Plate 22bis | Figure15 | |
| Anaulus | birostratus var. ? [Grunow] = Anaulus mediterraneus Grunow | Page -- | Plate 102 | Figure 8,10,11 | |
| Anaulus | birostratus f. angustior Grunow | Page -- | Plate 103 | Figure 3 | |
| Anaulus | debilis (Grunow) Van Heurck | Page 202 | Plate 126 | Figure17,18,19 | |
| Anaulus | mediterraneus Grunow | Page -- | Plate 102 | Figure 8,10,11 | |
| Anaulus | mediterraneus var. intermedia Grunow | Page -- | Plate 102 | Figure 9 | |
| Anaulus | minutus Grunow | Page -- | Plate 103 | Figure 4,5 |