| original |
Wenlockian |
|
USSR(Lithuanian SSR) |
Ditsevichyus,E.K. New species of chitinozoans from the Ordovician and Silurian deposits of the Southern Baltic and Belorussia. 2.Sphaerochitina. (In: Paleontology and stratigraphy of the Baltic and Belorussia) |
1971 |
| original |
Gedinnian |
Eifelian |
Spain |
Diez,M.D.C.R. et al. Chitinozoan zonation of the La Vid Formation (Gedinnian to Eifelian) in the Provinces of Leon and Oviedo, Spain. |
1977 |
| original |
Middle Gedinnian |
|
Spain |
Diez,M.D.C.R. et al. Iberian chitinozoans. 2. Lower Devonian forms (La Vid Shales and equivalents). |
1978 |
| details |
Gedinnian |
|
Europe |
Paris,F. The chitinozoans in the Paleozoic of Southwest Europe. |
1981 |
| details |
Middle Gedinnian |
|
Spain |
Finger,K.L. Sphaerochitina diazae, a new name for Sphaerochitina minima Diez and Cramer, 1978. |
1984 |