Subfamily
Sigmoopsinae Henningsmoen, 1953
| Images | ||||||
|---|---|---|---|---|---|---|
| TUG 1120-19 | Sigmoopsis (Sigmoopsis) cornuta | Ceratopsis platyceras n. sp. | Kukruse Stage | CII | holotype | |||
| GIT 138-40 | Idavere Substage | |||||
| GIT 141-10 | Jõhvi Substage | |||||
| GIT 141-11 | Severobolbina severa | Carinobolbina severa Sarv, 1959 | Jõhvi Substage | ||||
| GIT 141-12 | Sigmoopsis rostrata | Sigmoopsis rostrata (Krause, 1892) | Keila Stage | ||||
| GIT 141-13 | Sigmoopsis rostrata | Sigmoopsis rostrata (Krause, 1892) | Keila Stage | ||||
| GIT 141-15 | Sigmoopsis rostrata | Sigmoopsis rostrata (Krause, 1892) | Keila Stage | ||||
| GIT 153-287 | Sigmoopsis rostrata | Sigmoopsis rostrata (Krause, 1892) | 218.1 | Idavere Substage | b | |||
| TUG 1610-46 | Sigmoopsis (Sigmoopsis) cornuta | Sigmoopsis cornuta | Keila Stage | DII | ||||
| TUG 1610-7 | Sigmoopsis rostrata | Sigmoopsis rostrata | Keila Stage | DII |