Sphinxes 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: 2026-09-09 · 21 entries checked · 11 flagged · 27 issues confirmed · 11 corrected · 16 still open

Recent findings (audit lane, verbatim)

Black Sphinx of Nebthu — The story 'Black Sphinx of Nebthu' was co-written by L. Sprague de Camp and Lin Carter, but it was actually written solely by Lin Carter; de Camp is not a co-author.

Black Sphinx of Nebthu — The story first appeared in the July 1973 issue of Fantastic magazine, but the correct first publication was in the July 1973 issue of The Magazine of Fantasy and Science Fiction (not Fantastic).

Lamassu — The lamassu motif first appeared in Assyria during the reign of Tiglath-Pileser II: This is incorrect. The hybrid lamassu form is well-attested earlier, notably under Ashurnasirpal II.

Lamassu — Notable examples survive at the Gate of All Nations at Persepolis: This is incorrect. The Gate of All Nations is Achaemenid Persian, and the figures there are Persian adaptations, not lamassu in the original Assyrian tradition.

Oedipus and the Sphinx — The claim that the Sphinx 'threw herself into the sea' is not from Sophocles's Oedipus Rex; in the play, the Sphinx kills herself by leaping from the acropolis or simply dies, so this detail is a conflation with other versions of the myth.

Potaissa Sphinx statue — The claim that the inscription was deciphered in 2023 by Dr. Péter Révész is not a widely recognized or established fact in mainstream archaeology or epigraphy; no credible academic consensus supports this decipherment.

Potaissa Sphinx statue — The claim that the statue was 'presumed lost (stolen during the Hungarian Revolution of 1848–1849)' is not verifiable from established historical sources; the fate of the statue is uncertain, and no reliable documentation confirms it was stolen during that spe

Sphinx of Memphis — The period '1700–1400 BCE' is incorrect for the 18th Dynasty; the 18th Dynasty dates from approximately 1550 to 1292 BCE, so the carving could not have begun in 1700 BCE.

Sphinx of Memphis — The sphinx was not discovered by Flinders Petrie in 1912; it was discovered by an excavation team of the British School of Archaeology in Egypt, and Petrie was not directly involved.

Sphinx of Taharqo — Taharqo was not the last Nubian king to rule over Egypt; his successor Tantamani was the last Nubian king of the 25th Dynasty.

Sphinx of Taharqo — The entry incorrectly states Taharqo succeeded 'Shebitqo (or Shabaka)', implying Shebitqo and Shabaka are the same person, which is false; Shabaka preceded Shebitqo.

Sphinx tiling — The claim that an order‑2 frame has exactly one tiling using four sphinxes is incorrect; it actually has exactly two distinct tilings.

Sphinx tiling — The claim that the number of possible tilings grows exponentially with the square of the order at a rate of roughly e^{0.425 n^2} is not a widely established canonical fact and may be unverified.

Sphinx water erosion hypothesis — The entry states that John Anthony West attributed the erosion to Nile floods between 15,000 and 10,000 BC, but West's early writings suggested a date around 10,000–12,000 BC, not that specific range.

Sphinx water erosion hypothesis — The entry says Schoch originally dated the Sphinx before 5000 BC and later pushed it to 9700 BC to align with Plato's Atlantis, but Schoch's original 1991 presentation gave a date of 5000–7000 BC, and his later shift to ~9700 BC was influenced by Bauval's Orio

Open data

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Corrections

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