Quasipetalichthyidae
| Quasipetalichthyidae Temporal range: Givetian
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| Quasipetalichthys, the type genus | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | †Placodermi |
| Order: | †Petalichthyida |
| Family: | †Quasipetalichthyidae |
| Type genus | |
| Quasipetalichthys Liu, 1973
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| Genera[1] | |
Quasipetalichthyidae is an extinct[2] family of primitive petalichthyid placoderms from Givetian-aged marine strata of Yunnan, China, and possibly Vietnam.
Anatomy
[edit]The family 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 Quasipetalichthyidae by having comparatively elongated skulls.
Synapomorphies of the family include the presence of a posterior descending lamina, the absence of a supraorbital process, the posterior position of the ossification center of the nuchal plate, and the roundness of the preorbital plate.[3]
References
[edit]- ^ Interim Register of Non-Marine Genera. "IRMNG taxon details". IRMNG. Australian Ocean Biogeographic Information System. Retrieved 14 June 2025.
- ^ Mindat. "Quasipetalichthyidae ✝". Mindat.org. Mindat. Retrieved 14 June 2025.
- ^ Pan, Zhaohui; Zhu, Min; Zhu, You’an; Jia, Liantao (February 2015). "A new petalichthyid placoderm from the Early Devonian of Yunnan, China". Comptes Rendus Palevol. 14 (2): 125–137. Bibcode:2015CRPal..14..125P. doi:10.1016/j.crpv.2014.10.006.
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