TY  - JOUR
T1  - Researches on the Foraminifera.--Part III. On the Genera Peneroplis, Operculina, and Amphistegina. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 9
SP  - 334
EP  - 337
PY  - 1857/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1857.0082
M3  - doi:10.1098/rspl.1857.0082
AU  - Carpenter, W.
ER  -