Genus Tetrastrum
- Species total:
- 17
- Age range:
- 230 - 117 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Tetrastrum | Hettangian | Hettangian |
|
| Tetrastrum alpinum | Nd | Nd |
|
| Tetrastrum anomalum | Nd | Nd |
|
| Tetrastrum apiculatum | Nd | Nd |
|
| Tetrastrum ciliatum | Early Cretaceous | Early Cretaceous |
|
| Tetrastrum glabrum | Nd | Nd |
|
| Tetrastrum heteracanthum | Nd | Nd |
|
| Tetrastrum multifilorum | Late Carnian | Hauterivian |
|
| Tetrastrum multisetum | Nd | Nd |
|
| Tetrastrum punctatum | Nd | Nd |
|
| Tetrastrum rocklandicusis | Nd | Nd |
|
| Tetrastrum sp | Early Triassic | Early Triassic |
|
| Tetrastrum sp.A | Hauterivian | Hauterivian |
|
| Tetrastrum sp.B | Barremian | Barremian |
|
| Tetrastrum staurogeniaeforme | Nd | Nd |
|
| Tetrastrum tetracanthum | Nd | Nd |
|
| Tetrastrum truncatum | Nd | Nd |
|