Musser AM (2003). „Review of the monotreme fossil record and comparison of palaeontological and molecular data”. Comp. Biochem. Physiol., Part a Mol. Integr. Physiol. 136 (4): 927—42. PMID14667856. doi:10.1016/s1095-6433(03)00275-7.
Musser AM (2003). „Review of the monotreme fossil record and comparison of palaeontological and molecular data”. Comp. Biochem. Physiol., Part a Mol. Integr. Physiol. 136 (4): 927—42. PMID14667856. doi:10.1016/s1095-6433(03)00275-7.