Chepultepec Formation

Geology

Group: Knox

Members: unnamed (14)

Lithologies: lime mudstone (1), "limestone" (3), dolomite (11)

Paleoenvironments: marine indet. (1), carbonate indet. (11), shallow subtidal indet. (2)

Age range: base of the Tremadoc to the top of the Demingian or 486.40000 to 483.40000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Skullrockian - Stairsian488.9 - 481.7USA (Tennessee) (189308 189321 189330 189363 189371 189395)
Skullrockian - Stairsian488.9 - 481.7USA (Alabama) (189326 189370)
Demingian486.85 - 483.4USA (Tennessee) (154344)
Demingian486.85 - 483.4USA (Virginia) (56651)
Tremadocian486.85 - 477.1USA (Maryland) (189353)
Tremadocian486.85 - 477.1USA (Virginia) (7105 78881)
Tremadoc486.4 - 477.1USA (Virginia) (6971)