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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.
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]
Human infectious diseases may be characterized by their case fatality rate (CFR), the proportion of people diagnosed with a disease who die from it (cf. mortality rate).It should not be confused with the infection fatality rate (IFR), the estimated proportion of people infected by a disease-causing agent, including asymptomatic and undiagnosed infections, who die from the disease.
Lenisicaris is only known from frontal appendages, though these specimens have several distinguishing traits, most noticeably the lack of auxiliary spines. [5] The type species L. lupata has smaller, triangular endites, closely resembling those of Anomalocaris. [1]
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 ...
Flu A and flu B are the most common strains of the flu that circulate in humans. The U.S. is currently in the middle of flu season, with a high number of cases reported across the country.
Formerly referred to as "Anomalocaris" briggsi, it was placed in the new monotypic genus Echidnacaris in 2023. [1] It is only distantly related to true Anomalocaris, and is instead placed in the family Tamisiocarididae. [2] Echidnacaris is primarily known from its frontal appendages which had 13 podomeres. [1]
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 ...