| Leptoplana californica Plehn, 1897 | | - | primary taxonomic authority (describer) | |
| Pseudocerotidae Amblyceraeus Plehn, 1897 | | - | primary taxonomic authority (describer) | |
| Amblyceraeus luteus Plehn, 1897 | | - | primary taxonomic authority (describer) | |
| Pseudoceros luteus (Plehn, 1898) | | - | primary taxonomic authority (describer) | |
| incertae sedis Polyporus Plehn, 1897 | | w | primary taxonomic authority (describer) | |
| Polyporus caecus Plehn, 1897 | | w | primary taxonomic authority (describer) | |
| incertae sedis Polyporus Plehn, 1897 | | - | primary taxonomic authority (describer) | |
| Polyporus caecus Plehn, 1897 | | - | primary taxonomic authority (describer) | 90 |
| Pseudoceros luteus (Plehn, 1898) | | - | primary taxonomic authority (describer) | 94 |
| Amblyceraeus luteus Plehn, 1897 | | w | primary taxonomic authority (describer) | |
