Extinct Cenozoic Mammals Codexery — Data & Quality

We publish our audit record because accuracy claims should be checkable. Every entry on this site runs through an automated fact-audit pipeline (accuracy audit → source-grounded repair → visual QA); this page is generated from that pipeline's own report, not written by hand.

Last full accuracy audit: 2026-09-06 · 5 entries checked · 1 flagged · 2 issues confirmed · 1 corrected · 1 still open

Recent findings (audit lane, verbatim)

Amphicyonidae — The oldest known amphicyonid is not Daphoenus; the earliest amphicyonids are from the middle Eocene of North America, but Daphoenus first appears in the late Eocene (around 37 Ma), not 40 Ma.

Amphicyonidae — The statement that the family was erected by Haeckel in 1866 (also attributed to Trouessart 1885) is misleading: Haeckel did not erect Amphicyonidae; the family was first named by Trouessart in 1885.

Open data

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Corrections

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