North American land mammal age: verschil tussen versies

| '''NALMA''' || '''Tijd geleden ([[Ma (tijd)|Ma]])''' || '''ICS-tijdvak''' || '''Naamgevende locatie'''

| [[Rancholabrean]] || 0,324 - 0,01 || [[Pleistoceen]] || [[Rancho La Brea]]

| [[Irvingtonian]] || 1,8 - 0,324 || [[Pleistoceen]] ||

| [[Blancan]] || 4,759 - 1,8 || [[Plioceen]] ||

| [[Hemphillian]] || 910,03 - 4,759 || [[Mioceen]] ||

| [[HemingfordianClarendonian]] || 1113,86 - 910,03 || [[Mioceen]] ||

| [[Barstovian]] || 1516,53 - 1113,86 || [[Mioceen]] ||

| [[ClarendonianHemingfordian]] || 1920,06 - 1516,53 || [[Mioceen]] ||

| [[Arikareean]] || 30,5 - 1920,06 || [[Oligoceen]] / [[Mioceen]] ||

| [[Whitneyan]] || 3233,03 - 30,5 || [[Oligoceen]] ||

| [[Orellan]] || 33,59 - 3233,03 || [[Oligoceen]] ||

| [[Chadronian]] || 3738,0 - 33,59 || [[Eoceen]] ||

| [[Duchesnean]] || 4042,0 - 3738,0 || [[Eoceen]] || [[Duchesne River-formatie]]

| [[Uintan]] || 4546,4 - 4042,0 || [[Eoceen]] || [[Uinta-formatie]]

| [[Bridgerian]] || 50,0 - 4546,4 || [[Eoceen]] || [[Bridger-formatie]]

| [[Wasatchian]] || 55,5 - 50,0 || [[Eoceen]] || [[Wasatch-formatie]]

| [[Clarkforkian]] || 56,5 - 55,5 || [[Paleoceen]] || [[Clark's Fork-bekken]]

| [[Tiffanian]] || 60,5 - 56,54 || [[Paleoceen]] || [[Tiffany Beds-formatie]]

| [[Torrejonian]] || 62,5 - 60,5 || [[Paleoceen]] || [[Torrejon-formatie]]

| [[Puercan]] || 65 - 62,5 || [[Paleoceen]] || [[Puerco-formatie]]