Bristolia

Bristolia
Temporal range: late Lower Cambrian (Lower Olenellus-zone)
Bristolia mohavensis, cephalon superimposed on a roled-up specimen with cephalon and thorax, pygidium hidden or absent
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Trilobita
Order:
Redlichiida
Suborder:
Olenellina
Superfamily:
Olenelloidea
Family:
Biceratopsidae
Subfamily:
Bristoliinae
Genus:
Bristolia

Harrington, 1956
species
  • B. bristolensis (Resser, 1928), (type), synonym Mesonacis bristolensis
  • B. anteros Palmer, 1979
  • B. brachyomma Palmer, 1979)
  • B. fragilis Palmer, 1979
  • B. harringtoni Lieberman, 1999
  • B. insolens (Resser, 1928), synonyms Mesonacis insolens, Olenellus insolens
  • B. kurtzi Peel, 2011
  • B. mohavensis (Hazzard & Cirkmay, 1933), synonyms Paedeumias mohavensis, Olenellus mohavensis

Bristolia is an extinct genus of trilobite, fossil marine arthropods, with eight or more small to average size species. It is common in and limited to the Lower Cambrian (Upper Olenellus-zone) shelf deposits across the southwestern US, which constitutes part of the former paleocontinent of Laurentia.

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