| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Tomagnostella
Taxonomy
Tomagnostella was named by Kobayashi (1939) [Sepkoski's age data: Cm uMid-m Cm Dres-l]. It is not extant.
It was assigned to Spinagnostidae by Whittington et al. (1997); to Ptychagnostidae by Jell and Adrain (2002); to Agnostida by Sepkoski (2002); and to Hypagnostidae by Paterson and Laurie (2004).
It was assigned to Spinagnostidae by Whittington et al. (1997); to Ptychagnostidae by Jell and Adrain (2002); to Agnostida by Sepkoski (2002); and to Hypagnostidae by Paterson and Laurie (2004).