Occurrence of Cyclusphaera scabrata in Achiri (late middle-early late Miocene?, Bolivian Altiplano): Paleogeographical implication

1. Prámparo, M.B.
2. Antoine, P.-O.
3. Marivaux, L.
4. Andrade Flores, R.
5. Fernández-Monescillo, M.
6. Boscaini, A.
7. Mamani Quispe, B.
8. Fauquette, S.
9. Bonnet, C.
10. Münch, P.
11. Pujos, F.