cyclostomata

Updated: January 31, 2026

Another considerable innovation is the proposition to divide the class Pisces into the four groups of Leptocardia, Cyclostomata, Pisces, and Dipneusta. And there is much to be said in favour of the same promotion of the Cyclostomata, or Lampreys and Hags.

Thomas Henry Huxley - Critiques and Addresses