TY  - BOOK
AU  - Westermann,Gerd Ernst Gerold
TI  - The upper bajocian and lower bathonian (jurassic) ammonite faunas of Oaxaca, Mexico and west-tethyam affinities
T2  - Paleontologia mexicana
AV  - QE807 .A5 W48
PY  - 1981///
N1  - Bibliografia:  p. 37-38
ER  -