An ammonite trapped in Burmese amber.
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Proc Natl Acad Sci U S A. 2019 Jun 4;116(23):11345-11350. doi: 10.1073/pnas.1821292116. Epub 2019 May 13.
Proc Natl Acad Sci U S A. 2019.
PMID: 31085633
Free PMC article.