Hystrichosphaeridium |
Hystrichosphaeridium longispinosum
|
Nd |
Silurian |
|
Hystrichosphaeridium |
Hystrichosphaeridium brevispinosum
|
Nd |
Silurian |
|
Micrhystridium |
Micrhystridium stellatum
|
Nd |
Silurian |
|
Leiosphaera |
Leiosphaera retigera
|
Nd |
Silurian |
|
Leiofusa |
Leiofusa
|
Nd |
Silurian |
|
Lagenochitina |
Lagenochitina baltica
|
Nd |
Silurian |
|
Angochitina |
Angochitina echinata
|
Nd |
Silurian |
|
Acanthochitina |
Acanthochitina barbata
|
Nd |
Silurian |
|
Conochitina |
Conochitina lagenomorpha
|
Nd |
Silurian |
|
Conochitina |
Conochitina ancyrea
|
Nd |
Silurian |
|
Conochitina |
Conochitina cervicornis
|
Nd |
Silurian |
|
Rhabdochitina |
Rhabdochitina magna
|
Nd |
Silurian |
|
Parachitina |
Parachitina curvata
|
Nd |
Silurian |
|
Desmochitina |
Desmochitina nodosa
|
Nd |
Silurian |
|
Hystrichosphaeridium |
Hystrichosphaeridium vestitum
|
Nd |
Jurassic |
|
Hystrichosphaeridium |
Hystrichosphaeridium stimuliferum
|
Nd |
Jurassic |
|
Hystrichosphaeridium |
Hystrichosphaeridium ehrenbergii
|
Nd |
Jurassic |
|