TY  - RPRT
TI  - Earliest known crown-group salamanders.
AU  - Ke-Qin Gao
AU  - Neil H Shubin
PY  - 2003
DO  - 10.1038/nature01491
UR  - https://pubmed.ncbi.nlm.nih.gov/12660782/
ID  - 12660782
ER  -