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Anomalocaris ("unlike other shrimp", or "abnormal shrimp") is an extinct genus of radiodont, an order of early-diverging stem-group marine arthropods.. It is best known from the type species A. canadensis, found in the Stephen Formation (particularly the Burgess Shale) of British Columbia, Canada.
Anomalocaris canadensis was also relatively large, estimated up to 34.2–37.8 cm (13.5–14.9 in) long, [2] and the Cambrian hurdiid Titanokorys approached around 50 cm (20 in) long. [ 16 ] The body of a radiodont could be divided into two regions: head and trunk.
A new analysis of the extinct marine animal Anomalocaris canadensis suggests the Cambrian hunter was more of a weakling than once assumed. Ancient shrimplike predator was misunderstood, according ...
Jellyfish (left) and Anomalocaris canadensis (right), the top arthropod predator of the Cambrian Period, were preserved in the same rock slab. - Desmond Collins/Royal Ontario Museum.
Restoration of the nektonic environment of the site, showing a pair of Anomalocaris canadensis hunting a school of Isoxys acutangulus. The Burgess Shale is a fossil-bearing deposit exposed in the Canadian Rockies of British Columbia, Canada. It is famous for the exceptional preservation of the soft parts of its fossils.
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Anomalocarididae [1] (occasionally mis-spelt Anomalocaridae [2]) is an extinct family of Cambrian radiodonts, a group of stem-group arthropods. [3] [4]Around 1990s and early 2010s, Anomalocarididae included all radiodont species, hence the previous equivalent of the common name "anomalocaridid" to the whole Radiodonta. [5]
Anomalocaris canadensis is the 3-ft giant, found in the Burgess Shale, about 505 MA. Laggania cambria seems about 6 in. to 1 foot. Also from the Burgess Shale. Sam Gon's pages include fossils and reconstructions of Anomalocaris saron and Amplectobelua symbrachiata from the Chengjiang biota of in the Maotianshan Shales. These fossils date to ...