Genus
Orthonybyoceras Shimizu et Obata, 1935
| Images | ||||||
|---|---|---|---|---|---|---|
| TUG 100-6-1 | Orthonybyoceras | Orthonybyoceras cf. dyeri (Miller, 1875) | Oandu Stage | DIII | ||||
| TUG 100-6-2 | Orthonybyoceras | Orthonybyoceras cf. dyeri (Miller, 1875) | Oandu Stage | DIII | ||||
| TUG 100-7 | Oandu Stage | DIII | |||||
| TUG 100-8a | Oandu Stage | DIII | |||||
| TUG 100-8b | Oandu Stage | DIII | |||||
| TUG 1307-31 | Orthonybyoceras | Orthonybyoceras cf. dyeri (Miller, 1875) | Keila Stage | Vasalemma kihistu | ||||
| TUG 1307-32 | Keila Stage | |||||
| TUG 1307-33 | Keila Stage | Vasalemma kihistu | |||||
| TUG 1307-6 | Orthonybyoceras | Orthonybyoceras cf. dyeri (Miller, 1875) | Keila Stage | Vasalemma kihistu | ||||
| TUG 1393-19 | Vasalemma Formation | DII-DIIIV | holotype |