TY  - GEN
AU  - Cisne,J L
AU  - Chandlee,G O
AU  - Rabe,B D
AU  - Cohen,J A
TI  - Geograpehic variation and episodic evolution in an ordovician trilobite
SN  - 0036-8075
PY  - 2010///0702
N1  - Publication Type: Journal Article
UR  - https://doi.org/10.1126/science.209.4459.925
ER  -