| Name | From | To | Age range |
|---|---|---|---|
| Alexandrium fundyense | Nd | Nd |
|
| Alexandrium hiranoi | Nd | Nd |
|
| Alexandrium andersonii | Nd | Nd |
|
| Alexandrium ostenfeldii | Recent | Recent |
|
| Alexandrium concave | Nd | Nd |
|
| Alexandrium | Nd | Nd |
|
| Alexandrium margalefii | Nd | Nd |
|
| Alexandrium leei | Nd | Nd |
|
| Alexandrium lusitanicum | Nd | Nd |
|
| Alexandrium sp.3 | Nd | Nd |
|
| Alexandrium sp | Recent | Recent |
|
| Alexandrium cohorticula | Nd | Nd |
|
| Alexandrium peruvianum | Nd | Nd |
|
| Alexandrium taylorii | Nd | Nd |
|
| Alexandrium concavum | Nd | Nd |
|
| Alexandrium tamarense | Quaternary | Quaternary |
|
| Alexandrium monilatum | Nd | Nd |
|