Rhabdochitina |
Rhabdochitina magna
|
Africa |
Middle Ordovician |
Early Gothlandian |
Rhabdochitina |
Rhabdochitina minnesotensis
|
North America |
Middle Ordovician |
|
Rhabdochitina |
Rhabdochitina minnesotensis
|
Asia |
Middle Ordovician |
|
Rhabdochitina |
Rhabdochitina pistillifrons
|
Europe |
Ordovician |
|
Rhabdochitina |
Rhabdochitina striata
|
Europe |
Llanvirnian |
|
Rhabdochitina |
Rhabdochitina taenia
|
Europe |
Middle Ordovician |
Late Ordovician |
Rhabdochitina |
Rhabdochitina truncata
|
Europe |
Caradocian |
|
Rhabdochitina |
Rhabdochitina virgata
|
Europe |
Caradocian |
|
Sphaerochitina |
Sphaerochitina acanthifera
|
Europe |
Ludlovian |
|
Sphaerochitina |
Sphaerochitina acanthifera
|
Africa |
Ludlovian |
|
Sphaerochitina |
Sphaerochitina brevispinosa
|
Africa |
Middle Devonian |
Late Devonian |
Sphaerochitina |
Sphaerochitina collinsoni
|
North America |
Middle Devonian |
|
Sphaerochitina |
Sphaerochitina collinsoni
|
Europe |
Late Devonian |
|
Sphaerochitina |
Sphaerochitina collinsoni
|
Asia |
Middle Devonian |
|
Sphaerochitina |
Sphaerochitina complanata
|
Africa |
Frasnian |
Famennian |
Sphaerochitina |
Sphaerochitina complanata
|
Africa |
Early Devonian |
|
Sphaerochitina |
Sphaerochitina cuvillieri
|
Africa |
Frasnian |
Famennian |