Biceratopsidae

Biceratopsidae; Temporal range: Botomian/Toyonian (Olenellus-zone)
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Trilobita
Order:	Redlichiida
Suborder:	Olenellina
Superfamily:	Olenelloidea
Family:	Biceratopsidae; Pack & Gayle, 1971
Subfamilies
	Biceratopsinae Pack & Gayle, 1971; Bristoliinae Harrington, 1956;

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.

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[Lieberman_1999-1] 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.