Hystrichosphaeridium |
Hystrichosphaeridium sp
|
USSR |
Silurian |
|
Hystrichospheres |
Hystrichospheres
|
New York |
Silurian |
|
Leoniella |
Leoniella carminae
|
Spain |
Silurian |
|
Membranilarnax |
Membranilarnax
|
Europe |
Mesozoic |
|
Membranilarnax |
Membranilarnax pirus
|
France |
Ordovician |
|
Micrhystridium |
Micrhystridium sp
|
USSR(Siberia) |
Cambrian |
|
Micrhystridium |
Micrhystridium sp
|
Nd |
Carboniferous |
Permian |
Ovum |
Ovum hispidum
|
Nd |
Nd |
|
Paleopedicistus |
Paleopedicistus rodeoensis
|
Canada |
Devonian |
|
Polyedryxium |
Polyedryxium asperum
|
Spain |
Devonian |
|
Pulvinosphaeridium |
Pulvinosphaeridium
|
Europe |
Silurian |
|
Pulvinosphaeridium |
Pulvinosphaeridium pulvinellum
|
Sweden |
Silurian |
|
Spiniferites |
Spiniferites
|
Nd |
Nd |
|
Veryhachium |
Veryhachium
|
Baltic |
Middle Cambrian |
|
Veryhachium |
Veryhachium
|
Nd |
Carboniferous |
|
Veryhachium |
Veryhachium
|
Nd |
Permian |
|
Veryhachium |
Veryhachium trispinosum
|
USSR(Estonian SSR) |
Late Ordovician |
|