Biol. [f. TYPE sb.1 + EMBRYO.] The stage in the development of an embryo when the characteristic structure of its phylum or subkingdom begins to appear.
1887. Hyatt, in Proc. Boston Soc. Nat. Hist., 16 Nov., 398. Naming the embryo in these last stages the Typembryo. Ibid., 399. Typembryos serve to connect the earlier stages of the Neoembryos with the true larval stages which succeed the former.
