TY  - JOUR
T1  - On the Possibly Dual Origin of the Mammalia
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 43
SP  - 372
EP  - 379
PY  - 1887/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1887.0152
M3  - doi:10.1098/rspl.1887.0152
AU  - Mivart, S.
ER  -