Guiyu oneiros

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For the e-waste town, see Guiyu Town.
Temporal range: Late Silurian
Guiyu BW.jpg
Artist's concept of Guiyu oneiros.
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Superclass: Osteichthyes
Class: Sarcopterygii
Genus: Guiyu
Species: G. oneiros
Binomial name
Guiyu oneiros
Zhu et al., 2009

Guiyu oneiros is the earliest known bony fish. It lived during the Late Silurian (419 million years ago) in China and was 33 cm long.[1][2] It has the combination of both actinopterygian and sarcopterygian features, although analysis of the totality of its features place it closer to Sarcopterygii.[3]


Guiyu represents Mandarin 鬼魚 guǐyú "ghost fish." The specific name oneiros is from Greek ὄνειρος "dream."