LettersDiscussion and Correspondence UNIO CONDONI IN THE JOHN DAY BEDS + See all authors and affiliations Science 07 Mar 1902:Vol. 15, Issue 375, pp. 393DOI: 10.1126/science.15.375.393 ROBT. E. C. STEARNSFind this author on Google Scholar Find this author on PubMed Search for this author on this site Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears below.