Family
Aulaceratidae Kühn, 1927
| Images | ||||||
|---|---|---|---|---|---|---|
| GIT 310-110 | Aulacera | Aulacera sp. | Upper Ordovician | Otar Stage | ||||
| GIT 310-110#2 | Aulacera | Aulacera sp. | Upper Ordovician | Otar Stage | ||||
| GIT 477-50 | Aulacera | Aulacera sp. | Anticosti Island, CanadaPristana Bay | ||||
| GIT 748-27 | Pirgu Stage | Siuge Member | holotype |