Group: Midway

Members: unnamed (78), lower (4), McBryde (5), McBryde Limestone (9), Pine Barren (20), Pine Barren Sand (1), undifferentiated (1), upper (4), uppermost (2)

Lithologies: not reported (55), "siliciclastic" (2), claystone (5), siltstone (2), sandstone (10), "mixed carbonate-siliciclastic" (1), marl (2), chalk (2), packstone (6), "limestone" (36), "carbonate" (9)

Paleoenvironments: marine indet. (51), carbonate indet. (7), shallow subtidal indet. (30), open shallow subtidal (2), platform/shelf-margin reef (1), deep subtidal ramp (14), offshore ramp (1), marginal marine indet. (4), coastal indet. (12), estuary/bay (1), transition zone/lower shoreface (2)