| original |
Caradocian |
|
England(Shropshire) |
Jenkins,W.A.M. Ordovician chitinozoa from Shropshire. |
1967 |
| details |
Nd |
|
Nd |
Jenkins,W.A.M. Chitinozoa from the Ordovician Viola and Fernvale Limestones of the Arbuckle Mountains, Oklahoma. |
1969 |
| details |
Late Caradocian |
Early Ashgillian |
Canada(Anticosti Island) |
Achab,A. Chitinozoa from the Dicellograptus complanatus zone, Vaureal Formation (Upper Ordovician) Ile d'Anticosti, Quebec. |
1977 |
| details |
Famennian |
|
North America |
Jenkins,W.A.M. et al. Stratigraphic ranges of selected chitinozoa. |
1979 |
| details |
Late Llandeilian |
Early Caradocian |
Sweden |
Grahn,Y. Ordovician chitinozoa from the Stora Asbotorp Boring in Vastergotland South-Central Sweden |
1981 |
| details |
Early Caradocian |
|
Sweden |
Grahn,Y. Caradocian and Ashgillian chitinozoa from the subsurface of Gotland |
1982 |