| details |
Late Chazyan |
Blackriveran |
Oklahoma |
Derby,J.R. et al. Biostratigraphy of the Timbered Hills, Arbuckle and Simpson Groups, Cambrian and Ordovician, Oklahoma; A review of correlation tools and techniques available to the explorationist. (In: Late Cambrian Ordovician Geology of the Southern Midcontinent, 1989 Symposium. K.S. Johnson, editor) |
1991 |
| details |
Late Chazyan |
Blackriveran |
Oklahoma |
Derby,J.R. et al. Biostratigraphy of the Timbered Hills, Arbuckle and Simpson Groups, Cambrian and Ordovician, Oklahoma; A review of correlation tools and techniques available to the explorationist. (In: Late Cambrian Ordovician Geology of the Southern Midcontinent, 1989 Symposium. K.S. Johnson, editor) |
1991 |
| details |
Middle Ordovician |
Late Ordovician |
Ohio |
Jacobson,S.R. Acritarchs as paleoenvironmental indicators in Middle and Upper Ordovician rocks from Kentucky, Ohio and New York. |
1979 |
| details |
Late Ordovician |
|
Ohio |
Miller,M.A. Paleocological significance of chitinozoan recurrent species associations, (Upper Ordovician), Cincinnati Regon, USA. |
1980 |
| details |
Late Llanvirnian |
Early Ashgillian |
North America |
Jenkins,W.A.M. et al. Stratigraphic ranges of selected chitinozoa. |
1979 |
| details |
Famennian |
|
North America |
Jenkins,W.A.M. et al. Stratigraphic ranges of selected chitinozoa. |
1979 |
| details |
Caradocian |
|
North America |
Taugourdeau,P. et al. Chitinozoans-Illustrated bibliographic analysis |
1967 |
| details |
Middle Ordovician |
Late Ordovician |
North America |
Taugourdeau,P. et al. Chitinozoans-Illustrated bibliographic analysis |
1967 |
| details |
Llandeilian |
|
North America |
Taugourdeau,P. et al. Chitinozoans-Illustrated bibliographic analysis |
1967 |
| details |
Nd |
|
North America |
Zalusky,D.W. Paleobiogeography of chitinozoa. (In: Stratigraphic Micropaleontology of Atlantic Basin and Borderlands. F.M.Swain, editor) |
1977 |
| details |
Rocklandian |
Edenian |
New York |
Hart,C.P. Trenton Group chitinozoans from New York State. A brief review. |
1986 |
| details |
Middle Ordovician |
|
New York |
Miller,M.A. et al. Guide to visited Middle Ordovician localities. (In: A Field excursion to Trenton Group, (Middle and Upper Ordovician) and Hamilton Group Middle Ordovician) localities in New York and a survey of their chitinozoans. M.A.Miller, editor) |
1986 |
| details |
Late Arenigian |
Early Llandoverian |
Nd |
Uutela,A. Age and dispersal of sedimentary erratics on the coast of southwestern Finland. |
1989 |
| details |
Nd |
|
Nd |
Eisenack,A. Contribution to the study of chitinozoans. |
1972 |
| details |
Nd |
|
Nd |
Eisenack,A. Contribution to the study of chitinozoans. |
1972 |
| details |
Nd |
|
Nd |
Eisenack,A. Contribution to the study of chitinozoans. |
1972 |
| details |
Nd |
|
Nd |
Eisenack,A. Contribution to the study of chitinozoans. |
1972 |