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a78e9e071b8f233870d5ca908f52209b

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Pikaia Walcott, 1911

Source

Rank

genus

Names

1

species:4577842

Smithson. misc. Coll. , 57, (Quart. Issue X) no. 2014, 131, 132.

Classification

Chordata
- Pikaia Walcott, 1911