Biceratopsidae
| Biceratopsidae Temporal range: Botomian/Toyonian (Olenellus-zone) | |
|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | †Trilobita |
| Order: | †Redlichiida |
| Superfamily: | †Olenelloidea |
| Family: | †Biceratopsidae Pack & Gayle, 1971 |
| Subfamilies | |
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Biceratopsidae is an extinct family of redlichiid trilobites, with species of small to average size. Species of belonging to this family lived during the Toyonian stage (Olenellus-zone), 522–513 million years ago, in the former continent of Laurentia, including what are today the south-western United States and Canada. It contains the subfamilies Biceratopsinae and Bristoliinae.[1]
Habitat
The Biceratopsidae were probably marine bottom dweller, like all Olenellina.
References
- ^ Lieberman, Bruce S. (1999). "Systematic revision of the Olenelloidea (Trilobita, Cambrian)" (PDF). Bulletin of the Peabody Museum of Natural History. 45: 1–150. ISBN 9780912532479.