Name | From | To | Age range |
---|---|---|---|
Urochitina subglobosa | Nd | Nd |
|
Urochitina thyrae | Pridolian | Pridolian |
|
Urochitina urna | Pridolian | Pragian |
|
Urochitina verrucosa | Early Silurian | Middle Emsian |
|