This side view of this Quaternary foram shows the carina (a wide "fin" on either side of the test) edge on. The other rib-like structures are called costae. Image courtesy of R. Timothy Patterson, Carleton University. This image originally appeared in J. Foram. Res. 17:212-226 and is used with permission.
In this species, the carina (at 12 and 6 o'clock in this image) forms a hoodlike structure enclosing the neck of the test. Image courtesy of R. Timothy Patterson, Carleton University. This image originally appeared in J. Foram. Res. 17:212-226 and is used with permission.
