- Author:
- Jacobson,S.R.
- Year:
- 1987
- Title:
- Middle Ordovician acritarchs are guide fossils for the Upper Ordovician
- Reference:
- Jacobson,S.R. (1987) Middle Ordovician acritarchs are guide fossils for the Upper Ordovician Lethaia Vol. 20 # 1 P. 91- 92
- Google Academy:
- try to search by title in english
| Genus | Species | Country(Region) | From | To |
|---|---|---|---|---|
| Multiplicisphaeridium | Multiplicisphaeridium bifurcatum | Canada(Atlantic Coast) | Late Ordovician | |
| Multiplicisphaeridium | Multiplicisphaeridium irregulare | Canada(Atlantic Coast) | Late Ordovician | |
| Poikilofusa | Poikilofusa spinata | Canada(Atlantic Coast) | Late Ordovician | |
| Poikilofusa | Poikilofusa striata | Canada(Atlantic Coast) | Late Ordovician |