TY - GEN AU - Cifelli,Richard L AU - Davis,Brian M TI - Paleontology. Marsupial origins SN - 1095-9203 PY - 2003///1229 KW - Adaptation, Biological KW - Animals KW - Biological Evolution KW - Bone and Bones KW - anatomy & histology KW - China KW - Fossils KW - Mammals KW - classification KW - Marsupialia KW - Paleontology KW - Phylogeny KW - Time N1 - Publication Type: Comment; Journal Article UR - https://doi.org/10.1126/science.1092272 ER -