Genus
Bigalea Pojeta et Runnegar, 1976
Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Mollusca | 
| Class | Rostroconchia | 
| Order | Conocardiida | 
| Superfamily | Hippocardioidea | 
| Family | Hippocardiidae | 
| Genus | Bigalea | 
| Hippocardia | 
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Mollusca | 
| Class | Rostroconchia | 
| Order | Conocardiida | 
| Superfamily | Hippocardioidea | 
| Family | Hippocardiidae | 
| Genus | Bigalea | 
| Hippocardia |