Subgenus
Tetrada (Tetrada) Neckaja, 1958
| Images | ||||||
|---|---|---|---|---|---|---|
| TUG 1120-121 | Tetrada (Tetrada) krausei | Tetrada (Tallinnopsis) iewica | Keila Stage | DII | ||||
| TUG 1120-122 | Tetrada (Tetrada) grandis | Tallinnopsis grandis | Keila Stage | DII | ||||
| GIT 138-150 | Tetrada (Tetrada) memorabilis | Tallinnopsis memorabilis (Neckaja) | Jõhvi Substage | ||||
| GIT 138-151 | Tetrada (Tetrada) memorabilis | Tallinnopsis memorabilis (Neckaja) | Jõhvi Substage | ||||
| GIT 138-152 | Keila Stage | |||||
| GIT 138-153 | Keila Stage | |||||
| GIT 138-156 | Tetrada (Tetrada) grandis | Tallinnopsis grandis (Oraspõld, in coll.) | Keila Stage | holotype | |||
| GIT 138-157 | Tetrada (Tetrada) grandis | Tallinnopsis grandis (Oraspõld, in coll.) | Keila Stage | ||||
| GIT 138-158 | Tetrada (Tetrada) grandis | Tallinnopsis grandis (Oraspõld, in coll.) | Keila Stage | ||||
| GIT 138-159 | Tetrada (Tetrada) ovalis | Tallinnopsis ovalis (Oraspõld, in coll.) | Keila Stage | holotype |