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meaning: "Fish from Haikou"
Named By: Luo, et al 1999
Time Period: 535-520 Ma
Location: China, Qiongzhusi Formation
Size: 2.5 centimeters
Diet: unavailable
Fossil(s): One preserved specimen
Classification: | Chordata | Craniata | Agnatha |

Haikouichthys is an extinct genus of craniate (animals with notochords and distinct heads) believed to have lived 525 million years ago, during the Cambrian explosion of multicellular life. Haikouichthys had a defined skull and other characteristics that have led paleontologists to label it a true craniate, and even to be popularly characterized as one of the earliest fishes. Cladistic analysis indicates that the animal is probably a basal chordate or a basal craniate; but it does not possess sufficient features to be included uncontroversially even in either stem group.

Read more about Haikouichthys at Wikipedia
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