Trenton Formation, Group

Geology
Age range: base of the Katian to the top of the Chatfieldian or 453.00000 to 451.00000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Caradoc458.4 - 449.5USA (Virginia) (85655 85656 85657 85658 85659 85660 85661 85662 85663 85664 85665 85666 85667 85668 85669 85670 85671 85672 85673 85674 85675 85676 85677 85678 85679 85680 85681 85682 85683 85684 85685 85686 85687 85688 85689 85690 85691)
Mohawkian457.3 - 451.0USA (New York) (89113 172145 173686)
Shermanian - Edenian457.3 - 450.2USA (New York) (89062)
Shermanian - Edenian457.3 - 450.2Canada (Quebec) (89039 89091 89097 89110 89112)
Shermanian - Edenian457.3 - 450.2Canada (Ontario) (89052)
Rocklandian - Shermanian457.3 - 449.6USA (Michigan) (75970)
Shermanian457.3 - 449.6USA (New York) (76092 76744 89051 89092 172148)
Shermanian457.3 - 449.6Canada (Ontario) (89049 197144 233148 233149)
Trentonian457.3 - 449.6Canada (Quebec) (89063)
Trentonian457.3 - 449.6USA (New York) (338 157242 164717)
Chatfieldian453.8 - 451.0USA (New York) (76089 76090 76091 76093)
Chatfieldian - Edenian453.8 - 450.2Canada (Ontario) (233150)
Chatfieldian - Edenian453.8 - 450.2Canada (Quebec) (45286)
Katian453.0 - 445.2Canada (Quebec) (181082)
Katian453.0 - 445.2Canada (Ontario) (180117 182454)
Katian453.0 - 445.2USA (New York) (182627 204767)