| Yacimiento | Formación | Comunidad autónoma |
|---|---|---|
| Aguilar de Campoo section, benthic forams, 40 m | — | — |
| Alfara section (Carixian) | — | — |
| Alfara section (upper Carixian) | — | — |
| Barrios de Villadiego section, benthic forams, 5 m | — | — |
| Tudanca section. benthic forams, 115 m | — | — |
| Tudanca section. benthic forams, 193 m | — | — |