MIDDLE MALM EPOCH
KIMMERIDGIAN STAGE (154.7-152.1 MYA)
MORRISON FORMATION
UNKNOWN
UNITED STATES
WYOMING
ZONE 1
TIDWEL MEMBER
UNITED STATES
NEW MEXICO
UTAH
LOWER SALT WASH MEMBER
UNITED STATES
WYOMING
ZONE 2
SALT WASH MEMBER
UNITED STATES
COLORADO
NEW MEXICO
UTAH
WYOMING
LOWER BRUSHY BASIN MEMBER
UNITED STATES
COLORADO
NEW MEXIO
UTAH
WYOMING
ZONE 3
LOWER-UPPER BRUSHY BASIN MEMBER
UNITED STATES
COLORADO
MONTANA
NEW MEXICO
OKLAHOMA
UTAH
WYOMING
ZONE 4
UNITED STATES
COLORADO
IN GENERAL
AFRICA
ANGOLA
MOROCCO
TANZANIA
ASIA
ASIAN RUSSIA
CHINA
INDIA
GUJARATE STATE
KAZAKHSTAN
EUROPE
ENGLAND
FRANCE
NORMANDY
GERMANY
ITALY
POLAND
PORTUGAL
SCOTLAND
SPAIN
SWITZERLAND
EUROPEAN RUSSIA
SOUTH AMERICA
ARGENTINA
BRAZIL
CHILE
URUGUAY
NORTH AMERICA
CANADA
BRITISH COLUMBIA
NORTHWEST TERRITORES
GREENLAND
MEXICO
UNITED STATES OF AMERICA
ALASKA
ARIZONA
COLORADO
MONTANA
NEW MEXICO
TEXAS
UTAH
WYOMING