| Unjustified emendation (nom. illeg.: nom. van.) [ICZN, 1999: Art. 33.2.3] |  | 
			Ref: 
				
					R. Fricke et al. (eds.), 2021. Eschmeyer's Cat. Fish.: 11 Jun 2025; 6 Jul 2025.
				 [inferred] | 
		
		
			| Substitute name (nom. subst.) [ICZN, 1999: Arts. 23.3.5, 60.2 (available synonym)] |  | 
				Ref: Gill, T.[N.] 1863[1862]. Proc. Acad. Nat. Sci. Philad. 1862, for Apr 1862: 238 ("(Cuvier,)", "may be substituted for Thynnus"). ≡ | 
		
		
			| Possibly Substitute name (nom. subst.) [ICZN, 1999: Art. 33.2.3 (unjustified emendation)] |  | 
				Ref: 
					
						S.J. Brands (comp.), 1989-present. Syst. Nat. 2000: 6 Jul 2025 ("for Orcynus").
				 | 
			
			
				| Emendation (nom. emend.) [ICZN, 1999: Art. 33.2.1] |  | 
					Ref: 
						
							R. Fricke et al. (eds.), 2021. Eschmeyer's Cat. Fish.: 11 Jun 2025 ("Gill used the spelling Orycnus and the suffix orycnus in other genera").
						 [implicit] | 
				
				
					| Probably not Incorrect subsequent spelling (orth. inval.: orth. null.) [ICZN] |  | 
						Ref: 
							
								R. Fricke et al. (eds.), 2021. Eschmeyer's Cat. Fish.: 11 Jun 2025 ("it probably cannot be regarded as a misspelling").
						 |