Middle Jurassic (Bajocian) Eastern Oregon
Middle Jurassic (Bajocian) Eastern Oregon
Middle Jurassic (Bajocian) Eastern Oregon
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GEOLOGICAL SURVEY PROFESSIONAL PAPER 756 PLATE 32<br />
473 - 698 0- 73 - 12<br />
10 11<br />
WITCHELLIA (LATIWITCHELLIA)