Genus Yolkinigymnium
- Species total:
- 5
- Age range:
- 94 - 54.5 MA (obsolete dating)
- IRMNG:
- find
| Name | From | To | Age range |
|---|---|---|---|
| Yolkinigymnium sp | Late Maestrichtian | Late Maestrichtian |
|
| Yolkinigymnium lanceolatum | Turonian | Paleocene |
|
| Yolkinigymnium expansum | Early Maastrichtian | Early Maastrichtian |
|
| Yolkinigymnium elongatum | Late Campanian | Danian |
|
| Yolkinigymnium | Late Campanian | Early Maastrichtian |
|