July 8, 2015 for me: www.biorxiv.org/content/10.1... . Although I go back to arXiv from Jan 24, 2007: arxiv.org/abs/q-bio/07... .

Whole genome sequence analyses of Western Central African Pygmy hunter-gatherers reveal a complex demographic history and identify candidate genes under positive natural selectionAfrican Pygmies practicing a mobile hunter-gatherer lifestyle are phenotypically and genetically diverged from other anatomically modern humans, and they likely experienced strong selective pressures ...www.biorxiv.orgMarc Robinson-Rechavi

Following a discussion on preprints, I went looking for my oldest submission to @biorxivpreprint.bsky.social: April 2014, 5 months after bioRxiv started. www.biorxiv.org/content/10.1...

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