| original |
Arenigian |
|
USSR(Yaroslav) |
Umnova,N.I. Distribution of chitinozoa in the Ordovician of the Russian Platform |
1964 |
| details |
Arenigian |
|
S.Ireland(Offaly) |
Brмck,P.M. et al. The Lower Palaeozoic stratigraphy of the northern part of the Leinster Massif |
1974 |
| details |
Llandeilian |
|
S.Ireland(Offaly) |
Brмck,P.M. et al. The Lower Palaeozoic stratigraphy of the northern part of the Leinster Massif |
1974 |
| details |
Early Ordovician |
|
USSR(Russian Platform) |
German,T.N. Microfossils of Glauconite Layers (Data resulting from an investigation of a core from a borehole near Vologda). (In:Mikrofitofossilii Proterozoya i Rannego Paleozoya SSSR. B.V.Timofeev, editor) |
1974 |
| original |
Late Ordovician |
|
Canada(Anticosti Island) |
Achab,A. Upper Ordovician chitinozoa: Vaureal and Ellis Bay Formations - Anticosti Island, Quebec. |
1978 |
| details |
Late Ordovician |
|
Canada(Quebec) |
Finger,K.L. Conochitina achabae, a new name for Conochitina concava, Achab,1978. |
1983 |
| details |
Early Gamachian |
Late Richmondian |
Canada(Ontario) |
Melchin,M.J. et al. Evolutionary lineages in some Ordovician Chitinozoa. |
1985 |
| details |
Late Ashgillian |
|
Canada(Quebec) |
Achab,A. Ordovician chitinozoan zonation of Quebec and Western Newfoundland. |
1989 |
| details |
Late Ashgillian |
|
Canada(Newfoundland) |
Achab,A. Ordovician chitinozoan zonation of Quebec and Western Newfoundland. |
1989 |