from The Century Dictionary and Cyclopedia
- n. In embryology, that stage in the development of the egg which succeeds the blastula and precedes the formation of the gastrula.
Sorry, no etymologies found.
B depula, with advanced invagination, from the primitive mouth (g).
(C) Gastrula of an echinoderm (star-fish, Uraster), not completely folded in (depula).
I have in my Natural History of Creation given the name of depula to the remarkable intermediate form which appears at the passage of the blastula into the gastrula.
Sagittal section of a hooded-embryo (depula) of triton
H depula, or hollowed blastula (transverse section).