Downiesphaeridium |
Downiesphaeridium aciculare
|
Nd |
Nd |
|
Downiesphaeridium |
Downiesphaeridium armatum
|
Nd |
Nd |
|
Downiesphaeridium |
Downiesphaeridium bergmannii
|
Nd |
Nd |
|
Downiesphaeridium |
Downiesphaeridium bulbum
|
Nd |
Eocene |
|
Downiesphaeridium |
Downiesphaeridium flexuosum
|
Nd |
Nd |
|
Downiesphaeridium |
Downiesphaeridium iaculigerum
|
Nd |
Middle Kimmeridgian |
|
Downiesphaeridium |
Downiesphaeridium multispinosum
|
Nd |
Nd |
|
Downiesphaeridium |
Downiesphaeridium polyacanthum
|
Nd |
Nd |
|
Downiesphaeridium |
Downiesphaeridium spinulastrum
|
Nd |
Nd |
|
Dracodinium |
Dracodinium
|
Nd |
Nd |
|
Dracodinium |
Dracodinium condylos
|
Nd |
Nd |
|
Dracodinium |
Dracodinium granulatum
|
Nd |
Nd |
|
Dracodinium |
Dracodinium laszczynskii
|
Nd |
Nd |
|
Dracodinium |
Dracodinium pachydermum
|
Nd |
Nd |
|
Dracodinium |
Dracodinium politum
|
Nd |
Nd |
|
Dracodinium |
Dracodinium politum
|
Nd |
Nd |
|
Dracodinium |
Dracodinium politum
|
Nd |
Nd |
|