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Omnidens is found in both the Chengjiang Biota and the Xiaoshiba Lagerstätte of China, putting their age at approximately 520 Ma, during Cambrian Stage 3. [7] O. amplus and O. qiongqii are both known from the Chengjiang, but O. qiongqii is the only Omnidens species present at Xioashiba, where it is found in relative abundance (hundreds of ...
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Kerygmachela kierkegaardi is a kerygmachelid [2] gilled lobopodian from the Cambrian Stage 3 aged Sirius Passet Lagerstätte in northern Greenland. Its anatomy strongly suggests that it, along with its relative Pambdelurion whittingtoni , was a close relative of radiodont ( Anomalocaris and relatives) and euarthropods .
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 ...
[11] [7] 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) [7] [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 ...
T. gregarium fossil (part and counterpart). Amateur collector Francis Tully [] found the first of these fossils in 1955 in a fossil bed known as the Mazon Creek formation.He took the strange creature to the Field Museum of Natural History, but paleontologists were stumped as to which phylum Tullimonstrum belonged in. [7] The species Tullimonstrum gregarium ("Tully's common monster"), as these ...
Wiwaxia fossils—mainly isolated scales, but sometimes complete, articulated fossils—are known from early Cambrian and middle Cambrian fossil deposits across the globe. [ 4 ] [ 6 ] [ 7 ] The living animal would have measured up to 5 centimetres (2 in) when fully grown, although a range of juvenile specimens are known, the smallest being 2 ...
Balhuticaris was the largest bivalved arthropod in the fossil record, beating the previous holders of this title Nereocaris exilis and Tuzoia. This animal's body was very long, and had extreme segmentation compared to other Cambrian arthropods, with over 100 distinct segments.