| Name | From | To | Age range |
|---|---|---|---|
| Hexagonifera | Mesozoic | Cenozoic |
|
| Hexagonifera cassidata | Albian | Cenomanian |
|
| Hexagonifera chlamydata | Cretaceous | Eocene |
|
| Hexagonifera cylindrica | Late Jurassic | Cenomanian |
|
| Hexagonifera defloccata | Aptian | Maestrichtian |
|
| Hexagonifera echinata | Jackson | Jackson |
|
| Hexagonifera glabra | Late Albian | Senonian |
|
| Hexagonifera jurassica | Jurassic | Valanginian |
|
| Hexagonifera laticaudata | Santonian | Santonian |
|
| Hexagonifera reticulata | Late Paleocene | Eocene |
|
| Hexagonifera sahii | Late Paleocene | Middle Miocene |
|
| Hexagonifera scabrata | Early Cretaceous | Early Albian |
|
| Hexagonifera sp | Early Kimmeridgian | Late Eocene |
|
| Hexagonifera sp.1 | Bajocian | Middle Kimmeridgian |
|
| Hexagonifera sp.2 | Early Kimmeridgian | Portlandian |
|
| Hexagonifera sp.3 | Bajocian | Middle Kimmeridgian |
|
| Hexagonifera sp.A | Barremian | Turonian |
|