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Publication Announcement: Smithian (Early Triassic) ammonoids from Crittenden Springs, Elko County, Nevada

Smithian (Early Triassic) ammonoids from Crittenden Springs, Elko County, Nevada: Taxonomy, biostratigraphy and biogeography by James F. Jenks and Arnaud Brayard. New Mexico Museum of Natural History & Science Bulletin, 78: 1-175. 2018. This 175-page volume presents the results of decades of research at Crittenden Springs, one of the world’s most prolific Early Triassic ammonoid …