A Standard for Triassic Time
Auteur : Edward T. Tozer
Date de publication : 1967
Éditeur : Department of Energy, Mines and Resources
Nombre de pages : 103
Résumé du livre
"A summary of the data on the sequence and distribution of Triassic ammonoid faunas in Canada is provided. From these data a sequence of thirty-one ammonoid ones is recognized. The zones are grouped into stages, and where appropriate, substages." --