TY  - JOUR
T1  - Researches on the Foraminifera. Supplemental Memoir. On an Abyssal Type of the Genus Orbitolites; a Study in the Theory of Descent. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 35
SP  - 276
EP  - 279
PY  - 1883/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1883.0048
M3  - doi:10.1098/rspl.1883.0048
AU  - Carpenter, W.
ER  -