Visbysphaera sp.A Mart.,1982
- Citations total:
- 2
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| original | Late Frasnian | Belgium | Martin,F. Acritarchs and chitinozoans from the upper part of the Frasnian in an outcrop immediately north of Frasnes, (Belgium). | 1982 | |
| original | Nd | Nd | Le H©riss©,A. et al. Acritarches and Prasinophyte (Late Givetian-Middle Frasnian) of Ferques (Boulonnais, France). (In: The Devonian of Ferques Lower Boulonnais, (Northern France). D.Brice, editor) | 1988 |