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| Olenellus Temporal range:
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|---|---|
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| Olenellus thompsoni | |
Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | †Trilobita |
| Order: | †Redlichiida |
| Family: | †Olenellidae |
| Subfamily: | †Olenellinae |
| Genus: | †Olenellus Billings, 1861 |
| Species | |
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Olenellus is an extinct genus of redlichiid trilobites, with species of average size (about 5 centimetres or 2.0 inches long). It lived during the Botomian and Toyonian stages (Olenellus-zone), 522 to 510 million years ago, in what is currently North-America, part of the palaeocontinent Laurentia.[4]
- ^ a b c d e f g h i j k l Lieberman, B.S. (1999). "Systematic Revision of the Olenelloidea (Trilobita, Cambrian)" (PDF). Bulletin of the Peabody Museum of Natural History. 45.
- ^ Cowie, J.; McNamara, K.J. (1978). "Olenellus (Trilobita) from the Lower Cambrian Strata of North-West Scotland" (PDF). Palaeontology. 21 (3): 615–634.
- ^ a b c d Palmer, A.R. (1998). "Terminal Early Cambrian Extinction of the Olenellina: Documentation from the Pioche Formation, Nevada". Journal of Paleontology. 72 (4): 650–672. doi:10.1017/S0022336000040373. JSTOR 1306693.
- ^ W. H. Fritz (1995). "Esmeraldina rowei and associated Lower Cambrian trilobites (1f fauna) at the base of Walcott's Waucoban Series, Southern Great Basin, U.S.A.". Journal of Paleontology. 69 (4): 708–723. doi:10.1017/S002233600003523X. JSTOR 1306305.