? Member

Age range: base of the Tommotian to the top of the Middle Pleistocene or 525.50000 to 0.12900 Ma
Collections

Oldest occurrences

Time interval Ma Country or state Original ID and collection number
Tommotian525.5 - 521.0Sweden (8191)
Steptoean497.0 - 493.5USA (Wyoming) (9516)
Ibexian487.5 - 470.0USA (Nevada) (104522)
Arenig478.6 - 466.0Russian Federation (Leningrad) (57056)
Chazyan470.0 - 457.3Canada (Quebec) (435)
Whiterockian470.0 - 457.3USA (New York) (103016 103282 103310)
Whiterockian470.0 - 457.3USA (Utah) (104241)
Sandbian458.4 - 453.0Canada (Ontario) (182453)
Mohawkian457.3 - 451.0USA (Nevada) (105569)
Ashgill - Wenlock449.5 - 427.4Canada (Nunavut) (188186)

Youngest occurrences

Time interval Ma Country or state PBDB collection number
Late/Upper Miocene11.608 - 5.333Algeria (Oran) (35287)
Pliocene5.333 - 2.588USA (North Carolina) (144072)
Pliocene5.333 - 2.588South Africa (22353)
Pliocene - Pleistocene5.333 - 0.0117Russian Federation (West Siberia) (40483)
Blancan4.9 - 1.8USA (California) (19663)
Blancan4.9 - 1.8USA (Arizona) (19619)
Early/Lower Pleistocene2.588 - 0.781Russian Federation (West Siberia) (40484)
Gelasian - Calabrian2.588 - 0.774Tanzania (21974)
Pleistocene - Holocene2.588 - 0.0South Africa (22231)
Middle Pleistocene0.774 - 0.129Argentina (Córdoba) (226119)