Micrhystridium |
Micrhystridium tetraxis
|
England(Yorkshire) |
Late Oxfordian |
|
Micrhystridium |
Micrhystridium thusui
|
Nd |
Nd |
|
Micrhystridium |
Micrhystridium tornacense
|
Belgium |
Late Devonian |
|
Micrhystridium |
Micrhystridium tornatum
|
USSR(Estonian SSR) |
Early Cambrian |
|
Micrhystridium |
Micrhystridium triassicum
|
Nd |
Nd |
|
Micrhystridium |
Micrhystridium trispinosum
|
Nd |
Nd |
|
Micrhystridium |
Micrhystridium tubulatum
|
Argentina |
Oligocene |
|
Micrhystridium |
Micrhystridium tubulispinosum
|
Belgium |
Eocene |
|
Micrhystridium |
Micrhystridium uncinatum
|
Nd |
Nd |
|
Micrhystridium |
Micrhystridium unilaterale
|
USSR(Siberia) |
Cambrian |
|
Micrhystridium |
Micrhystridium valensii
|
France |
Middle Jurassic |
|
Micrhystridium |
Micrhystridium vanoyei
|
Belgium |
Late Devonian |
|
Micrhystridium |
Micrhystridium variabile
|
France |
Middle Jurassic |
|
Micrhystridium |
Micrhystridium varians
|
Nd |
Nd |
|
Micrhystridium |
Micrhystridium varipinnosum
|
USSR(Estonian SSR) |
Ordovician |
|
Micrhystridium |
Micrhystridium varispinosum
|
USSR(Estonian SSR) |
Middle Ordovician |
|
Micrhystridium |
Micrhystridium veligerum
|
Nd |
Nd |
|