Author:
Richardson,J.B.;Rasul,S.M.;Al-Ameri,T.
Year:
1981
Title:
Acritarchs, miospores and correlation of the Ludlovian - Downtonian and Silurian - Devonian boundaries.
Reference:
Richardson,J.B. et al. (1981) Acritarchs, miospores and correlation of the Ludlovian - Downtonian and Silurian - Devonian boundaries. Review of Palaeobotany and Palynology Vol. 34 P. 209- 224
Google Academy:
try to search by title in english
Genus Species Country(Region) From To
Onondagella Onondagella asymmetrica USSR(Russian Platform) Llandoverian Ludlovian
Onondagella Onondagella deunffii England Downtonian
Onondagella Onondagella deunffii Libya Late Ludlovian
Onondagella Onondagella deunffii USSR(Estonian SSR) Downtonian
Onondagella Onondagella deunffii USSR(Russian Platform) Downtonian
Pulvinosphaeridium Pulvinosphaeridium trifidum USSR(Estonian SSR) Downtonian Gedinnian
Pulvinosphaeridium Pulvinosphaeridium trifidum USSR(Russian Platform) Downtonian Gedinnian
Pulvinosphaeridium Pulvinosphaeridium trifidum Libya Gedinnian
Streelispora Streelispora newportensis England Gedinnian
Streelispora Streelispora newportensis USSR(Russian Platform) Gedinnian
Streelispora Streelispora newportensis Wales Gedinnian
Visbysphaera Visbysphaera dilatispinosa England Ludlovian Downtonian
Visbysphaera Visbysphaera dilatispinosa Wales Ludlovian Downtonian
Visbysphaera Visbysphaera dilatispinosa Libya Ludlovian Downtonian
Visbysphaera Visbysphaera jardinei Libya Downtonian