Author:
Lott,G.K.;Thomas,J.E.;Riding,J.B.;Davey,R.J.;Butler,N.
Year:
1989
Title:
Late Ryazanian Black Shales in the Southern North Sea Basin and their lithostratigraphical significance
Reference:
Lott,G.K. et al. (1989) Late Ryazanian Black Shales in the Southern North Sea Basin and their lithostratigraphical significance Proceedings of the Yorkshire Geological Society Vol. 47 # 4 P. 321- 324
Google Academy:
try to search by title in english
Genus Species Country(Region) From To
Achomosphaera Achomosphaera neptuni North Sea Late Ryazanian
Kleithriasphaeridium Kleithriasphaeridium fasciatum North Sea Late Ryazanian
Kleithriasphaeridium Kleithriasphaeridium porosispinum North Sea Late Ryazanian
Pseudoceratium Pseudoceratium pelliferum North Sea Late Ryazanian