Age

Aelenian

Bajocian

Bathonian

Callovian

Oxfordian

Kimmeridgian

Tithonian

Taxa

1

2

3

4

5

6

7

8

9

10

11

12

Zones after Baumgartner

Hiscocapsa sp. Verbeeki

Zhamoidellum ovum Dumitrica

Gongylothorax favosus Dumitrica

Holocryptocanium sp. Dumitrica

Williriedellum crystallinum Dumitrica