Beekmantown Group

Geology

Formations: unnamed (1), Beauharnois (5), Cutting Dolomite (1), Fort Cassin (9), March (9), Oxford (2), Rochdale (8), Stonehenge (1), Tribes Hill (26)

Lithologies: not reported (2), "shale" (5), sandstone (13), conglomerate (2), lime mudstone (4), wackestone (3), packstone (7), grainstone (5), "reef rocks" (8), bindstone (1), "limestone" (24), dolomite (5)

Paleoenvironments: marine indet. (2), carbonate indet. (9), peritidal (4), shallow subtidal indet. (21), open shallow subtidal (15), lagoonal/restricted shallow subtidal (3), reef, buildup or bioherm (4), deep subtidal shelf (4)

Age range: base of the Stairsian to the top of the Floian or 485.40000 to 470.00000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Skullrockian487.5 - 482.3USA (New York) (87318 87319 87320 87451 87454 87456 87523 87524 88873 88887 89489)
Ibexian487.5 - 470.0USA (New York) (64618)
Stairsian485.4 - 478.6USA (New York) (42799 89490 89491 89492 89499 89501 89502 89504)
Gasconadian485.4 - 477.7USA (New Jersey) (119379)
Gasconadian485.4 - 477.7USA (New York) (119376 119377 119378)
Tremadocian485.4 - 477.7Canada (Ontario) (173862 173863 173864 173865 173866 173867 173868 173869 173870)
Tremadocian485.4 - 477.7USA (New York) (174036 174037 174038 174039 174040 174041 174042 174043 174044 174045 174046 174047)
Cassinian482.3 - 470.0USA (Vermont) (42793 154944)
Cassinian482.3 - 470.0USA (New York) (42782 42798 90082 88944 90194 90195 101293 102534)
Cassinian482.3 - 470.0Canada (Quebec) (50060 50062 50063 100355 102533)
Arenig478.6 - 466.0Canada (Ontario) (173871)
Floian477.7 - 470.0Canada (Ontario) (173861)