Pikaia

Pikaia
Name	Pikaia
Phylum	Chordata
Period	Mid Cambrian (Wheeler - Burgess Shale)

Pikaia gracilens is an extinct animal known from the Middle Cambrian Burgess Shale of British Columbia. Sixteen specimens of Pikaia are known from the Greater Phyllopod bed, where they comprised 0.03% of the community. They are the Burgess Shale chordates. They look like Lancelets that were living non-vertabratan chordates like sea squirts (Tunicate) and even look like an Eel and with Slug eyes. Haikouichthys and Myllokunmingia are the oldest chordate because it lived in Chengjiang and Emu Bay Shale.

References

http://burgess-shale.rom.on.ca/en/fossil-gallery/view-species.php?id=101&ref=i&

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