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meaning: "named after Sidney Wallcott"
Named By: Charles Walcott in 1911
Time Period: Burgess Shale
Location: Canada, British Columbia - Burgess Shale., Possibly also the USA
Size: Largest specimens up to 12.7 centimetres long
Diet: Carnivore
Fossil(s): Well over 100 individuals
Classification: | Arthropoda | Limulavida |

Sidneyia is an extinct arthropod known from fossils found in the Cambrian-age Burgess Shale formation of British Columbia. 144 specimens of Sidneyia are known from the Greater Phyllopod bed, where they comprise 0.27% of the community.

Read more about Sidneyia at Wikipedia
PaleoCodex is a weekend hack by Saurav Mohapatra