Leiosphaeridium |
Leiosphaeridium eisenackii
|
Nd |
Ordovician |
|
Leiosphaeridium |
Leiosphaeridium fastigatirugosum
|
Nd |
Late Devonian |
|
Leiosphaeridium |
Leiosphaeridium minutum
|
Nd |
Late Devonian |
|
Leiosphaeridium |
Leiosphaeridium muitschum
|
Nd |
Wenlockian |
|
Leiosphaeridium |
Leiosphaeridium pusillum
|
Nd |
Early Jurassic |
|
Leiosphaeridium |
Leiosphaeridium simile
|
Nd |
Tithonian |
|
Leiosphaeridium |
Leiosphaeridium tenuissimum
|
Nd |
Ordovician |
|
Leiosphaeridium |
Leiosphaeridium wenlockii
|
Nd |
Nd |
|
Leiotriletes |
Leiotriletes
|
Nd |
Nd |
|
Leiotriletes |
Leiotriletes compactus
|
Nd |
Nd |
|
Leiotriletes |
Leiotriletes crassus
|
Nd |
Early Cambrian |
|
Leiotriletes |
Leiotriletes minutissimus
|
Nd |
Proterozoic |
Early Cambrian |
Leiotriletes |
Leiotriletes nigratus
|
Nd |
Middle Devonian |
Late Devonian |
Leiotriletes |
Leiotriletes nigratus
|
Nd |
Frasnian |
Famennian |
Leiotriletes |
Leiotriletes nigratus
|
Nd |
Middle Devonian |
Late Devonian |
Leiotriletes |
Leiotriletes sibiricus
|
USSR(Evenki Nat.Okrug) |
Late Paleozoic |
|
Leiotriletes |
Leiotriletes simplicissimus
|
Nd |
Early Cambrian |
|