JURASSIC - Jurassic rocks, Middle and Upper, undivided - Morrison Formation; Upper Jurassic nonmarine rocks present only in northern one-third of state - Morrison Formation and upper San Rafael Group - Zuni Sandstone; consists of undivided equivalents of the Summerville Formation and Bluff Sandstone; restricted to Zuni Basin area - Zuni and Entrada Sandstones, undivided - Entrada Sandstone, Middle Jurassic; Callovian - San Rafael Group; consists of Entrada Sandstone, Todilto and Summerville Formations, Bluff Sandstone, and locally Zuni Sandstone (or only Acoma Tongue of Zuni)