Meanings of discoid gastrula in inglês

Hence we may derive the discoid gastrula from the original bell-gastrula, through the intermediate stage of the hooded gastrula.

In both cases a discoid gastrula with primitive streak arises from the segmented ovum, a two-layered germinal disk with long and small hinder primitive mouth.

Discoid gastrula (discogastrula) of a bony fish.

Discoid segmentation ( discoid gastrula).