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Taxonavigation: Neopterygii 

Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Superclassis/Classis: Actinopterygii
Classis/Subclassis: Actinopteri
Subclassis/Infraclassis: Neopterygii

Infraclassis: Holostei
Division: Halecomorphi
Ordo: †Ionoscopiformes
Genus: †Robustichthys

Species: †R. luopingensis


Robustichthys Xu et al., 2014

Type species: †Robustichthys luopingensis Xu et al., 2014

Etymology: The generic name is from the Latin robustus, meaning strong, and ichthys, The Greek word for fish.


  • Xu, G.-H., Zhao, L.-J. & Coates, M. I., 2014: The oldest ionoscopiform from China sheds new light on the early evolution of halecomorph fishes. Biology Letters, 10: 20140204. DOI: 10.1098/rsbl.2014.0204