González León, Carlos M.
Ammonoid discoveries in the Antimonio Formation, Sonora, Mexico: new constraints on the Triassic-Jurassic boundary - Oxford Elsevier Science November 2000 - pp. 491-497 ilus.
0895-9811
AMMONOIDEA
JURASICO
TRIASICO
MEXICO
SONORA
FORMACION ANTIMONIO
Ammonoid discoveries in the Antimonio Formation, Sonora, Mexico: new constraints on the Triassic-Jurassic boundary - Oxford Elsevier Science November 2000 - pp. 491-497 ilus.
0895-9811
AMMONOIDEA
JURASICO
TRIASICO
MEXICO
SONORA
FORMACION ANTIMONIO