| original |
Cambrian |
Silurian |
Canada(Ontario) |
Hinde,G.J. On Annelid jaws from the Cambro-Silurian, Silurian and Devonian Formations in Canada and from the Lower Carboniferous in Scotland |
1879 |
| details |
Clintonian |
|
New York |
Johnson,H. Middle Silurian scolecodonts from Rochester, New York. |
1937 |
| details |
Ordovician |
Devonian |
Nd |
Matthes,H.W. Introduction to micropaleontology |
1956 |
| details |
Cambrian |
Silurian |
Canada(Ontario) |
Kozur,H. A study on the classification of fossil Phyllodocida and Eunicida (polychaeta). |
1970 |
| details |
Ordovician |
|
India |
Viswanathiah,M.N. et al. Scolecodonts and chitinozoa from the Indian Peninsula. |
1980 |
| details |
Middle Ordovician |
Devonian |
Worldwide |
Taugourdeau,P. Importance of evolution of the dispersed scolecodonts, (Annelids) in the stocking of seas during Paleozoic times. |
1983 |
| details |
Late Ordovician |
Early Silurian |
India(Himachal Pradesh) |
Khanna,A.K. Scolecodonts from Late Ordovician-Early Silurian sequence of Spiti Valley, Tethys Himalaya. (In: Proceedings, Symposium and Technical Sessions. R.S. Tiwari, editors) |
1984 |
| details |
Nd |
|
Nd |
Bergman,C.F. Silurian Paulinitid Polychaetes from Gotland |
1989 |
| details |
Nd |
|
Nd |
Szaniawski,H. Scolecodonts. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |