Bactrotheca
| Bactrotheca | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Class: | †Hyolitha |
| Order: | †Orthothecida |
| Family: | †Orthothecidae |
| Genus: | † |
Bactrotheca is an extinct genus of orthothecid hyolith with a bulbous "protoconch".[1]
References
- ^ DZIK, J. 1980. Ontogeny of Bactrotheca and related hyoliths. GFF, 102, 223–233.