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This list contains many extinct arthropod genera from the Cambrian Period of the Paleozoic Era. Some trilobites, bradoriids and phosphatocopines may not be included due to the lack of literature on these clades and inaccessibility of many papers describing their genera. This list also provides references for any Wikipedia users who intend to ...
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Omnidens, meaning "all-tooth", is an extinct genus of large Cambrian animal known only from a series of large mouth apparatus and sclerotized talon-like structures, originally mistaken as the mouthparts of anomalocaridids. [1] When first named, it was interpreted as a giant priapulid, [1] but is now considered a panarthropod. [2]
[10] [2] A nearly complete specimen of a juvenile Lyrarapax unguispinus measured only 18 mm (0.71 in), making it among the smallest radiodont specimens known, though adults reached a length of 8.3 cm (3.3 in) [2] [13] An isolated frontal appendage of a hurdiid with a length less than half that of the juvenile Lyrarapax is known, but it is not ...
The Burgess Shale was the first of the Cambrian lagerstätten to be discovered (by Walcott in 1909), and the re-analysis of the Burgess Shale by Whittington and others in the 1970s was the basis of Gould's book Wonderful Life, which was largely responsible for non-scientists' awareness of the Cambrian explosion.
Cambroernids encompass three particular types of enigmatic animals first appearing in the Cambrian: Herpetogaster (the type genus), Phlogites, and the Eldonioidea.They are united by a set of common features including at least one pair of bifurcated or divided oral tentacles, and a large stomach and narrower intestine enclosed together in a clockwise-coiled sac.
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In total this creature had about 110 pairs of biramous limbs, the most of any Cambrian-aged arthropod. Covering the head of this creature was a large carapace that resembles an arch or other curved structure. This structure only covers the frontmost part of this arthropod but it does extend ventrally beyond its appendages. [1]