The middle and upper Lochkovian (Lower Devonian) conodont successions in key peri-Gondwana localities (Spanish Central Pyrenees and Prague Synform) and their relevance for global correlations

1. Valenzuela-Ríos, J.I.
2. Slavík, L.
3. Liao, J.-C.
4. Calvo, H.
5. Hušková, A.
6. Chadimová, L.