Wiwaxia – a spined sea floor dweller

(wee-wax-ee-a)

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Model of Wiwaxia corrugata.
Image: Benjamin Healley
Source: Museum Victoria

Fossil of Wiwaxia corrugata.
Image: Jon Augier
Source: Museum Victoria

Cambrian

HOW BIG IT WAS

Wiwaxia relative size depiction as described below
Wiwaxia was up to 5.5 cm long.

Wiwaxia is another animal with uncertain affinities; some palaeontologists think it should be placed with the molluscs, others think it belongs with the worms and still others say it was unlike either of these and has no known relatives. Its back was covered in hard plates called sclerites with two rows of long spikes, while its underside was probably soft. It is thought to have fed using rasping teeth for scraping food off the sea floor. 

WHERE IT WAS FOUND

Wiwaxia map

This fossil of Wiwaxia corrugata was discovered in Canada.

RELATED OBJECTS

Other objects from the Cambrian

RedlichiaArchaeocyathidsAnomalocarisGreenstonesDookie mineralsSedimentary rocks