| SN2000 author citation | : |  | (T.H. Huxley, 1850) E.R. Lankester, 1877 | 
	
		| Original name & spelling | : |  | Huxley, T.H. 1850. Ann. Mag. Nat. Hist. (2) 6 (31): 66 ("I propose"). [unranked]. ≡ | 
	
		| Subsequent rank (orig. spell.) | : |  | Lankester, E.R. 1877. Quart. J. Microsc. Sci. (N.S.) 17: 441, 443. ≡ |