Triassic Time and Ammonoids: Problems and Proposals

• 1 August 1971
• journal article
• Published by Canadian Science Publishing in Canadian Journal of Earth Sciences
• Vol. 8  (8) , 989-1031
• https://doi.org/10.1139/e71-088

Abstract

Keywords

• CLASSIFICATION
• TIME SCALE
• AMMONOID
• PROBLEMS ARISING
• ENCOUNTERED
• TRIASSIC TIME
• AGE OBTAINED