The Wasatchian is considered to contain the following substages: •
Sandcouleean: shares lower boundary with the beginning of the Wasatchian age and shares upper boundary with the base of the Graybullian. •
Graybullian: shares lower boundary with the end of the Sandcouleean subage and upper boundary with the base of the Lysitean. •
Lysitean: shares lower boundary with the end of the Graybullian subage and upper boundary with the base of the Lostcabinian. •
Lostcabinian: shares lower boundary with the end of the Lysitean subage and upper boundary with the beginning of the Bridgerian. == Wasatchian correlations ==