Biceratopsidae

Biceratopsidae; Temporal range: Botomian/Toyonian (Olenellus-zone) 522–513 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Clade:	†Artiopoda
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.

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.{{cite journal}}: CS1 maint: periodical has ISBN (link)

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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.{{cite journal}}: CS1 maint: periodical has ISBN (link)