| original |
Llandeilian |
|
Baltic |
Eisenack,A. New Mikrofossils of the Baltic Silurian.1. |
1931 |
| details |
Pridolian |
|
Baltic Sea |
Eisenack,A. New microfossils of the Baltic Silurian.2. |
1932 |
| details |
Silurian |
|
Germany |
Eisenack,A. Additional information on the Melanoskleritoid problem. |
1950 |
| details |
Silurian |
|
Baltic |
Collinson,C. et al. North American Paleozoic Chitinozoa |
1955 |
| details |
Early Ordovician |
|
Africa |
Taugourdeau,P. et al. Chitinozoans-Illustrated bibliographic analysis |
1967 |
| details |
Ordovician |
|
Baltic |
Eisenack,A. The microfossils of Osteekalke (Ordovician) 3. Graptolite, Melanoskelton, Sponge, Radiolarian, problematic and Supplements on Foraminifera and phytoplankton |
1971 |
| details |
Nd |
|
Nd |
Paris,F. et al. A revised chitinozoan classification |
1999 |