Vorlage:Linkbox Kreide (Geologie) öömrang
| Süsteem | Serie | Kirew | ≈ Ääler (mya) |
|---|---|---|---|
| huuger | huuger | huuger | jonger |
| Kritj | Boowerkritj | Maastrichtium | 70,6–65,5 |
| Campanium | 83,5–70,6 | ||
| Santonium | 85,8–83,5 | ||
| Coniacium | 88,6–85,8 | ||
| Turonium | 93,6–88,6 | ||
| Cenomanium | 99,6–93,6 | ||
| Onerkritj | Albium | 112–99,6 | |
| Aptium | 125–112 | ||
| Barremium | 130–125 | ||
| Hauterivium | 133,9–130 | ||
| Valanginium | 140,2–133,9 | ||
| Berriasium | 145,5–140,2 | ||
| liager | liager | liager | ääler |