TY  - BOOK
AU  - Willmer,Pat
TI  - Invertebrate relationships : : patterns in animal evolution / 
SN  - 0521330645
U1  - 592.038 WIL 
PY  - 1990///
CY  - Cambridge : 
PB  - Cambridge University Press, 
KW  - Invertebrates
KW  - Evolution
KW  - Invertebrates, Fossil
N1  -  Includes index;  Bibliography: p. [363]-383
ER  -