TY  - BOOK
AU  - Stahl,Barbara J
TI  - Vertebrate history: problems in evolution 
SN  - 0070606986
PY  - 1974///
CY  - New York
PB  - McGraw-Hill
KW  - Vertebrates
KW  - Evolution
KW  - Vertebrates, Fossil
N1  - p. 560-579
ER  -