Late Cambrian – Early Jurassic
Eotomariidae is an extinct family of facultatively mobile epifaunal suspension feeders
Description of the Family
- Turbiniform to Trochiform
- Labral slit invariably present
- Concave selenizone bordered by threads at mid-height of whorl
Treatise on Invertebrate Paleontology, Part I (1960):
- Shell turbiniform to trochiform; labral slit invariably present, generating concave selenizone bordered by threads at approximately mid-height of whorl.