- Author:
- Obut,A.M.;Sennikov,N.V.;Zaslavskaya,N.M.
- Year:
- 1984
- Title:
- Siberian Graptolite and chitinozoa assemblages at the Cambrian-Ordovician boundary
- Reference:
- Obut,A.M. et al. (1984) Siberian Graptolite and chitinozoa assemblages at the Cambrian-Ordovician boundary Geologiya i Geofizika Vol. 25 # 3 P. 3- 7
- Google Academy:
- try to search by title in english
| Genus | Species | Country(Region) | From | To |
|---|---|---|---|---|
| Ancyrochitina | Ancyrochitina | USSR(Siberia) | Early Tremadocian | |
| Conochitina | Conochitina | USSR(Siberia) | Early Tremadocian | |
| Lagenochitina | Lagenochitina | USSR(Siberia) | Early Tremadocian | |
| Sphaerochitina | Sphaerochitina | USSR(Siberia) | Early Tremadocian |