Conochitina scabra / Spinachitina taugourdeaui |
Spinachitina oulebsiri |
Biostratigraphy |
North Gondwana |
6c |
6c |
1 |
|
|
Conochitina scabra / Spinachitina taugourdeaui |
Porkuni |
Regional Standard |
Baltoscandia |
6c |
6c |
1 |
|
|
Conochitina scabra / Spinachitina taugourdeaui |
Ancyrochitina ellisbayensis / Spinachitina taugourdeaui |
Biostratigraphy |
North America |
6c |
6c |
1 |
|
|