| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Brachythyris quadriradiatus
Taxonomy
Spirifer quadriradiatus was named by de Verneuil (1845).
It was recombined as Brachythyris quadriradiatus by Kalashnikov (1998).
It was recombined as Brachythyris quadriradiatus by Kalashnikov (1998).
Sister species lacking formal opinion data