| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Asaphus quadraticaudatus was named by Billings (1865) [Lectotype selected by Whittington 1965]. Its type specimen is GSC 654 (lectotype), a pygidium, and it is a mold.
It was recombined as Niobe quadraticaudata by Raymond (1925).
It was recombined as Niobe quadraticaudata by Raymond (1925).
Sister species lacking formal opinion data