Columbia subject headings:
Geology, Stratigraphic--Jurassic--Congresses.
Geology--Gulf States--Congresses.
Harvard subject headings:
Geology, Stratigraphic--Jurassic--Congresses.
Geology--Gulf Region (U.S.)--Congresses.
Princeton subject headings:
Geology, Stratigraphic--Jurassic--Congresses.
Geology--Gulf Region (U.S.)--Congresses.