telencephalic vesicle

tel·en·ce·phal·ic ves·i·cle

paired diverticula arising from the prosencephalon, from which the forebrain develops.
References in periodicals archive ?
In Amphibians and Elasmobranchs there is a pattern of evagination of the thick sidewalls of the telencephalic vesicle which causes both walls to meet in the median plane (forming two lateral ventricules) (Braford, 1995; Laming, 1981).