Paris Biota Ammonoids & Nautiloids

 A very late post

Ammonoids and nautiloids from the earliest Spathian Paris Biota and other early Spathian localities in southeastern Idaho, USA

Arnaud Brayard, James F. Jenks, Kevin G.Bylund and the Paris Biota Team 2019

Part of a Special Volume dedicated to the Paris Biota of SE Idaho.