original |
Early Muschelkalk |
|
Poland |
Zawidzka,K. A polychaete jaw apparatus and some scolecodonts from the Polish Middle Triassic. |
1971 |
original |
Middle Proterozoic |
|
India(Bihar) |
Nautiyal,A.C. Middle Proterozoic microfloras (microfaunas) from Banded Hematite Jasper of Kiriburu and Meghatuburu areas (Singhbhum District, Bihar), Eastern India. |
1989 |
original |
Early Arenigian |
|
Argentina(Salta) |
Vergel,M.D.M. et al. Ordovician palynomorphs of Argentina: An integrated approach. (Aspects of the Ordovician System in Argentina.) |
2002 |