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Author - title
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Year
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| details | Silurian | Belgium | Sarjeant,W.A.S. et al. The Micrhystridium and Veryhachium Complexes (Acritarcha: Acanthomorphitae and Polygonomorphitae): A taxonomic reconsideration. | 1994 | |
| details | Late Cenomanian | Early Turonian | Czech Republic | Zitt,J. et al. Rocky coast facies of the Cenomanian-Turonian boundary interval at Velim, (Bohemian Cretaceous Basin, Czech Republic). Second Part | 1997 |