External link - taxa
Description of a new taxon
| Sphenoecium wheelerensis Maletz & Steiner, 2015 |
Only short mention of taxon
| Yuknessia stephenensis LoDuca et al., 2015 † | |
| Dalyia nitens † BIOLIB: Walcott, 1919 |
Others
| Dalyia racemata Walcott, 1919 † | |
| Yuknessia Walcott, 1919 † | |
| Yuknessia simplex Walcott, 1919 † | |
| Dalyia Walcott, 1919 † | |
| Archaeolafoea Chapman, 1919 † | |
| Archaeolafoea longicornis Chapman, 1919 † | |
| Archaeolafoea fruticosa Chapman and Thomas, 1936 † BIOLIB: Chapman & Thomas, 1936 | |
| Archaeolafoea serialis Chapman and Thomas, 1936 † BIOLIB: Chapman & Thomas, 1936 | |
| Archaeolafoea tarda Howell, 1949 † | |
| Sphenoecium Chapman & Thomas, 1936 | |
| Sphenoecium filicoides (Chapman, 1917) | |
| Sphenoecium mesocambricus (Öpik, 1933) † | |
| Sphenoecium obuti (Durman and Sennikov, 1993) BIOLIB: (Durman & Sennikov, 1993) | |
| Sphenoecium discoidalis Chapman and Thomas, 1936 BIOLIB: Chapman & Thomas, 1936 | |
| Sphenoecium robustus (Maletz et al., 2005) † |