Click
here to close Hello! We notice that
you are using Internet Explorer, which is not supported by Echinobase
and may cause the site to display incorrectly. We suggest using a
current version of Chrome,
FireFox,
or Safari.
Definition: "A region of the ectoderm derived from the animal hemisphere (i.e., mesomere descendants) and located just above the equator on the ventral side of the embryo."
Stage Range:
vegetal plate stage to late gastrula stage