门: 节肢动物门 von Siebold, 1848
纲: 三叶虫纲 Walch, 1771
目: 莱德利基虫目 Richter, 1932
科: 小油栉虫科 Walcott, 1890
属: 布里斯托虫属 Harrington, 1956
种: 布里斯托虫 Resser, 1928
描述:
背部外骨骼：第四头鞍叶膨大至头甲前缘；新月型眼脊从头鞍前端向后弯曲；缺乏面线；头甲具有一对轻微弯曲的长颊刺。颊刺位于头甲侧面靠前位置。胸部共有15节胸节。第三节肋叶膨大呈三角形并具有长的向后延伸的侧刺。最后1胸节的轴端向后伸出1细直的轴刺。尾甲几乎不可见。
附肢：参考中间型始莱德利基虫
Phylum: Arthropoda von Siebold, 1848
Class: Trilobita Walch, 1771
Order: Redlichiida Richter, 1932
Family: Olenellidae Walcott, 1890
Genus: Bristolia Harrington, 1956
Specie: Bristolia bristolensis Resser, 1928
Description:
Dorsal exoskeleton: L4 touches the anterior border; crescent-shaped eye ridges spring from the back of the frontal lobe of the central area of the cephalon; lacks dorsal sutures; Cephalon bears a pair of long slightly curved long genal spine. The genal spines are attached in front of the back of the headshield. There are 15 segments in the thorax. The third pleura is inflated and looks triangular with its lateral spine extends to the posterior area. A long, straight spine extends posteriorly from the last segment of the axis lobe in the throax.
Appendages: refers to Eoredlichia intermediata.
时代:
早寒武世，Bristolia mohavensis-Bristolia insolens 三叶虫带。
主要产地:
加利福尼亚州的葬礼山、安息泉山和葡萄藤山等地。
简要描述：
第四鞍叶触及头甲前缘；第三肋叶膨大；无面线。
Age:
Early Cambrian, Bristolia mohavensis-Bristolia insolens Zone.
Principal localities:
Funeral Mountains, Resting Spring Range and Grapevine Mountains in California.
Brief description :
Frontal lobe touches the anterior border; inflated third pleura; without facial suture.
Fowler, E.D. (1999). Biostratigraphy of upper Dyeran strata of the Carrara Formation, Emigrant Pass, Nopah Range, California. Laurentia 99: V field conference of the Cambrian Stage Subdivision Working Group, International Subcomission on Cambrian Stratigraphy. pp. 46–50.
Webster, M. (April 3–5, 2002). Stratigraphic trends in morphology: the evolution of Bristolia (Trilobita, Cambrian). GSA Joint Annual Meeting. Vol. 34. Lexington, Kentucky: Geological Society of America. p. A14.
Peel, J.S. (2011). "Olenelloid trilobites form Cambrian Series 2 of Devon Island, Nunavut, Arctic Canada". Canadian Journal of Earth Sciences. 48 (11): 1471–1482. Bibcode:2011CaJES..48.1471P. doi:10.1139/E11-048.