Guiyu
Guiyu may refer to: *''Guiyu oneiros'' (鬼鱼), extinct bony fish *Guiyu (town) Guiyu () is a town created from an agglomerate of four adjoined villages totalling 150,000 people in the Chaoyang district of Guangdong province in China. Situated on the South China Sea coast, Guiyu is perhaps best known in the global environme ...

Guiyu Oneiros
''Guiyu oneiros'' is one of the earliest articulated Osteichthyes, bony fish discovered. Fossils of ''Guiyu'' have been found in what is now Qujing, Yunnan, China, in late Silurian marine strata, about 425 million years old. ''Guiyu'' is part of the Xiaoxiang fauna which is rich in fossils representing a marine ecosystem. Found in the late Silurian#Ludlow, Ludlow-aged Kuanti Formation, the remains were dated using conodonts as index fossils. The Xiaoxiang fauna also includes galeaspids, placoderms and acanthodians. Discovery and naming ''Guiyu'' was described by Chinese palaeontologist Zhu Min (:zh:朱敏 (古生物学家), 朱敏) and others in 2009, based on a near-complete articulated specimen. The generic name ''Guiyu'' is a transliteration of the Mandarin 鬼魚 ''guǐyú'' "Ghosts in Chinese culture, ghost fish" and the specific name ''oneiros'' is from Greek ὄνειρος "dream". Description The holotype specimen is about in length and about in depth. The caudal f ...
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