- Author:
- Jacobson,S.R.
- Year:
- 1979
- Title:
- Acritarchs as paleoenvironmental indicators in Middle and Upper Ordovician rocks from Kentucky, Ohio and New York.
- Reference:
- Jacobson,S.R. (1979) Acritarchs as paleoenvironmental indicators in Middle and Upper Ordovician rocks from Kentucky, Ohio and New York. Journal of Paleontology Vol. 53 # 5 P. 1197- 1212
- Google Academy:
- try to search by title in english
| Genus | Species | Country(Region) | From | To |
|---|---|---|---|---|
| Veryhachium | Veryhachium oklahomense | New York | Middle Ordovician | Late Ordovician |
| Veryhachium | Veryhachium trispinosum | Ohio | Middle Ordovician | Late Ordovician |
| Veryhachium | Veryhachium trispinosum | New York | Middle Ordovician | Late Ordovician |