Deposit your preprint in an open repository, such as bioRxiv, PaleorXiv and PeerJ Preprints. The preprint must have a DOI and be publicly available (Open Access).
Submit your preprint to PCI Paleo. The preprint must not be under review elsewhere during the evaluation process. Recommenders of PCI Paleo are alerted of your submission, and if one of them finds it interesting he/she initiates the evaluation process (see point 3). If after 20 days none of them has manifested interest, the preprint is released and sent back to the authors.
Great! One of the recommenders finds your preprint particularly interesting. He/she initiates the evaluation process and seeks the opinion of at least two external reviewers. Recommender and reviewers must declare that they have no conflict of interest of any kind with the content or the authors of the preprint and that they are not close colleagues, recent co-authors, relatives, or friends of any of the authors. A classic cycle of peer-review follows (reviews, decisions, authors' replies, revisions), and the authors are asked to upload revised versions of the preprint in the open archive after each revision.
Eventually, the handling recommender decides either to reject or accept (see point 5) the revised preprint for recommendation.
Congratulations, your preprint has been accepted for recommendation! The handling recommender writes a recommendation text that is published (with a DOI) on the PCI Paleo website, alongside all of the editorial correspondence (reviews, recommender's decisions, authors' replies). The authors are asked to upload a new version of their preprint in the open archive with a PCI Paleo cover page and a modified abstract containing a link to the PCI Paleo recommendation and its DOI. Your preprint can now be cited as peer-reviewed.
Note: Although this is not the ultimate goal of PCI Paleo, authors have the possibility to submit their recommended preprint, as well as the editorial correspondence, to a conventional journal.
Postprints may also be recommended by PCI Paleo if they are of particular interest to the community. In that case, a recommendation text written by a recommender and a co-recommender is published by PCI Paleo, without peer-review.
Note: Postprints may include papers recommended by other PCIs, peer-reviewed by other peer-review services, or published in conventional journals.