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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.
Subsequently, it was recognized that Anomalocaris was a distinct form from the other two, resulting in a split into two genera, the latter of which was variously named Laggania and Peytoia until it was determined that both represent the same species and Peytoia had priority. [23]
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]
A. symbrachiata is previously named as a species of Anomalocaris, Anomalocaris trispinata in 1992, before description of A. symbrachiata. [2] Some studies considered that name Amplectobelua trispinata should be used instead of A. symbrachiata. [6] [7]
The type species is Houcaris saron which was originally described as a species of the related genus Anomalocaris. [1] Other possible species include H. magnabasis and H. consimilis . [ 2 ] [ 3 ] The genus Houcaris was established for the two species in 2021 and honors Hou Xianguang, who had discovered and named the type species Anomalocaris ...
The type species L. lupata has smaller, triangular endites, closely resembling those of Anomalocaris. [1] The other species L. pennsylvanica (formerly described as a species of Anomalocaris [2]) has larger and more rectangular endites, with those on odd-numbered podomeres being smaller. [1]
Burgessomedusa adds to the complexity of Cambrian foodwebs, and like Anomalocaris which lived in the same environment, these jellyfish were efficient swimming predators,” said study coauthor Dr ...
Guanshancaris is an extinct genus of amplectobeluid radiodont known from the Cambrian Stage 4 Guanshan Biota of southern China. It is only known from a single species. G. kunmingensis which was described in 2013 as a species of Anomalocaris [1] before being placed in a new genus in 2023.