门: 节肢动物门（干群）
目：射齿目
科: 奇虾科
属：奇虾属
种: 加拿大奇虾
描述:
该类群的身体为两侧对称，背腹式平压且外表皮未矿化。整个身体发育3对较小的头部叶片，13对躯干叶片以及明显的尾扇。躯干叶片腹部表面靠基部位置发育鳃状刚毛片构造。尾扇由最中间的一个小片及其两侧3对较大的片状构造构成。头部区域发育一对用来抓取食物的前附肢、一对巨大的带柄复眼以及一个向腹部开口的圆形口器。前附肢共14节，除了最后一节外，其它肢节各发育一对短刺状内叶，内叶两侧各分布一根短的辅助刺。复眼生长在背侧且巨大。口部发育有3个大的口板，大口板两两之间夹杂着若干个中等和小口板。口板呈圆形排列，内部边缘长有锯齿状小刺，口部最中间具有近似矩形的开口。肠道由前肠、中肠和后肠构成，贯穿整个躯干内部，其中中肠腺成对出现。
Phylum: (stem-group) Arthropoda von Siebold, 1848
Order: Radiodonta Collins, 1996
Family: Anomalocarididae Raymond, 1935
Genus: Anomalocaris Whiteaves, 1982
Species: Anomalocaris canadensis Whiteaves, 1982
Description:
Anomalocaris canadensis has a bilaterally symmetrical and dorsoventrally flattened body with a non-mineralized exoskeleton. The body bears three small head flaps and 13 trunk flaps with gills, and a prominent smooth tailfan, which consists of three pairs of prominent fins that flank a small median blade. The head region bears one pair of anterior grasping appendages, two eyes on stalks, and a ventrally oriented circular mouth apparatus with many spiny plates. The frontal appendages are elongated and composed of 14 podomeres, each of which possesses paired short spiniform endites with a pair of auxiliary spines except for the distalmost podomere. The stalked eyes are dorsal and relatively large. The mouth apparatus arranged in a circle and consists of three large plates with a variable number of medium and small plates between them, with sharp spines pointing into a square central opening. Paired gut glands are associated with the body segments in some specimens.
层位：寒武纪苗岭统乌溜阶，Bathyuriscus–Elrathina生物带（约505百万年前）
主要产地: 加拿大大不列颠哥伦比亚省的布尔吉斯页岩生物群，包括Fossil Ridge的Collins, Raymond和 Walcott采石场；Stephen山的Trilobite Beds, Tulip Beds (S7)和Collins采石场；Field山、史坦利冰川和Cranbrook页岩。中国云南昆明尖山剖面。
Period: Cambrian Miaolingian Series, Wuliuan Stage, Bathyuriscus–Elrathina biozone (approximately 505 million years ago); possible Cambrian Series 2, Stage 3, Eoredlichia–Wutingaspis biozone (approximately 518 million years ago).
Principal localities: The Collins, Raymond and Walcott Quarries on Fossil Ridge. The Trilobite Beds, Tulip Beds (S7) and the Collins Quarry on Mount Stephen; Mount Field, Mount Stephen, near Stanley Glacier and in the Early Cambrian Cranbrook Shale, Eager Formation, British Columbia. Jianshan village, eastern Yunnan, south-west China.
Briggs, D. E. G. 1979. Anomalocaris, the largest known Cambrian arthropod. Palaeontology, 22: 631-663.
Daley, A.C., Edgecombe, G.D., 2014. Morphology of Anomalocaris canadensis from the Burgess Shale. J. Paleontol. 88: 68–91.
Whittington, H. B., D. E. G. Briggs., 1985. The largest Cambrian animal, Anomalocaris, Burgess Shale, British-Columbia. Philosophical Transactions of the Royal Society of London Series B-Biological Sciences, 309: 569-609.