- according to Hottinger (2006):
PROTOCONCH - the first chamber of a test with an embryonic apparatus or in which a deuteroconch is differentiated. In most dimorphic larger foraminifera, the microspheric generation has a proloculus, the megalospheric generation a protoconch or megalosphere.
Hottinger (2006), Illustrated glossary of terms used in foraminiferal research. Carnets de Géologie, Memoir 2, ISSN 1634-0744