Temporal range: late Lower Cambrian (Olenellus-zone) 522–513 Ma
PreꞒ
Ꞓ
O
S
D
C
P
T
J
K
Pg
N
Bristolia mohavensis, cephalon superimposed on a roled-up specimen
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Trilobita
Order:
Redlichiida
Suborder:
Olenellina
Superfamily:
Olenelloidea
Family:
Biceratopsidae
Subfamily:
Bristoliinae
Harrington, 1956
Genera
Bristolia Harrington, 1956
Fremontella Harrington, 1956
Lochmanolenellus Lieberman, 1998
The Bristoliinae is an extinct subfamily of trilobites, fossil marine arthropods, with species of small to average size. Species belonging to this subfamily lived during the Botomian and Toyonian stage (Olenellus-zone), 522-513 million years ago, in the former continent of Laurentia, including what are today Mexico, the Appalachian Mountains and the south-western United States, and Canada (Northwest Territories).[1]
^Lieberman, B.S. (1999). "Systematic Revision of the Olenelloidea (Trilobita, Cambrian)" (PDF). Bulletin of the Peabody Museum of Natural History. 45.
The Bristoliinae is an extinct subfamily of trilobites, fossil marine arthropods, with species of small to average size. Species belonging to this subfamily...
the Cambrian Period. Fremontella shares with the other genera of the Bristoliinae subfamily, Lochmanolenellus and Bristolia conspicuous and long curved...
the common ancestor of Mummaspis, Laudonia, the Biceratopsinae and the Bristoliinae. This clade is the sister group Wanneria walcottana and of the Holmiidae...
closest to the common ancestor of Laudonia, the Biceratopsinae and the Bristoliinae. Including the species of Fritzolenellus, this clade is the sister group...
Lochmanolenellus mexicana. These three genera together comprise the subfamily Bristoliinae. The sister group Biceratopsinae can be distinguished by their strongly...
Holmiidae, Fritzolenellus, Mummaspis, Laudonia, the Biceratopsinae and the Bristoliinae. Including Elliptocephala, this clade is the sistergroup of the Olenellidae...
comprising Fritzolenellus, Mummaspis, Laudonia, the Biceratopsinae and the Bristoliinae. So far, cladistic analysis could not determine which two of these groups...
United States and Canada. It contains the subfamilies Biceratopsinae and Bristoliinae. The Biceratopsidae were probably marine bottom dweller, like all Olenellina...
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