Biceratopsinae
Biceratopsinae Temporal range: Toyonian (Upper Olenellus-zone) 516–513 Ma | |
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Emigrantia sp., a cephalon | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Trilobita |
Order: | Redlichiida |
Suborder: | Olenellina |
Superfamily: | Olenelloidea |
Family: | Biceratopsidae |
Subfamily: | Biceratopsinae (Pack & Gayle, 1971)[1] |
Genera | |
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The Biceratopsinae is an extinct subfamily of trilobites, fossil marine arthropods, with species of small to average size. Species belonging to this subfamily lived during the Toyonian stage (Upper Olenellus-zone), 516-513 million years ago, in the former continent of Laurentia, including what are today the South-Western United States and Canada.[4]
Etymology
The Biceratopsinae are named for the type species Biceratops nevadensis.
Habitat
The Biceratopsinae were probably marine bottom dweller, like all Olenellina.
References
- ↑ Lieberman, B.S. (1999). "Systematic Revision of the Olenelloidea (Trilobita, Cambrian)" (PDF). Bulletin of the Peabody Museum of Natural History. 45.
- ↑ M., Webster (2007). "Ontogeny and evolution of the early Cambrian trilobite genus Nephrolenellus (Olenelloidea)". Journal of Paleontology. 81: 1168–1193. doi:10.1666/06-092.1.
- ↑ Webster, M. (2007). "Paranephrolenellus, a New Genus of Early Cambrian Olenelloid Trilobite". Memoirs of the Association of Australasian Palaeontologists. 34: 101–130.
- ↑ Pack, P.D.; Gayle, H.B. (2009). "A New Olenellid Trilobite, Biceratops nevadensis, from the Lower Cambrian near Las Vegas, Nevada". Journal of Paleontology. 45 (5). pp. 893–898.
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