Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium laxum
|
USSR(Russian Platform) |
Tremadocian |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium lueberi
|
USSR(Russian Platform) |
Tremadocian |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium minor
|
USSR(Russian Platform) |
Tremadocian |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium operculatum
|
USSR(Russian Platform) |
Tremadocian |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium porrectum
|
USSR(Russian Platform) |
Tremadocian |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium pungens
|
USSR(Russian Platform) |
Tremadocian |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium resistens
|
USSR(Russian Platform) |
Tremadocian |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium semireticulatum
|
USSR(Russian Platform) |
Tremadocian |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium simplex
|
USSR(Russian Platform) |
Tremadocian |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium solitare
|
USSR(Russian Platform) |
Middle Ordovician |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium sp
|
USSR(Russian Platform) |
Tremadocian |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium sp
|
USSR(Russian Platform) |
Early Ordovician |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium tener
|
USSR(Russian Platform) |
Tremadocian |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium tener
|
USSR(Russian Platform) |
Early Ordovician |
|
Archaeohystrichosphaeridium |
Archaeohystrichosphaeridium tribulosum
|
USSR(Russian Platform) |
Tremadocian |
|
Baltisphaeridium |
Baltisphaeridium borracherosum
|
USSR(Russian Platform) |
Late Ordovician |
|
Baltisphaeridium |
Baltisphaeridium borracherosum
|
Spain |
Ludlovian |
|