“The Gracisce packstones contain a rich foraminiferal assemblage, composed of larger and planktonic foraminifera along with authigenic glauconite.”
“Furthermore, foraminiferal growth is often strongly allometric, and in many foraminifers the shape of the chamber changes during ontogeny.”
“Depending on the group, a foraminiferal shell may be made of organic compounds, sand grains and other particles cemented together, or secreted crystalline calcium carbonates.”