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Temporal range: Givetian
Quasipetalichthys haikouensis.jpg
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Placodermi
Order: Petalichthyida
Family: Quasipetalichthyidae
Type species
Quasipetalichthys haikouenis
Liu, 1973

Quasipetalichthyidae is a family of primitive petalichthyid placoderms from Givetian-aged marine strata of Yunnan, China, and possibly Vietnam. The family contains two confirmed genera, Quasipetalichthys, and Eurycaraspis, which differ from the more advanced macropetalichthyids by having more squared skulls that have the eye sockets placed on the side of their skulls, rather than nearer to the center. More basal petalichthyids, such as Diandongpetalichthys and Neopetalichthys, differ from the quasipetalichthyids by having comparatively elongated skulls.