Tellis BNJ 61 F 1a (=Eustathios Comm. Ad Hom. Od.11.538, p. 1696, 51)
“But Tellis records that Penthesileia killed Achilles and, after Thetis begged him, Zeus returned him to life and he killed her instead. Penthesileia’s father, Ares, took Thetis to court. Poseidon was the judge and he ruled against Ares.”
…Τέλλις δὲ ἱστορεῖ Πενθεσίλειαν ἀνελεῖν τὸν ᾽Αχιλλέα, αἰτησαμένης δὲ Θέτιδος τὸν Δία ἀναστῆναι αὐτὸν καὶ ἀντανελεῖν ἐκείνην. ῎Αρεα δὲ πατέρα Πενθεσιλείας δίκην λαχεῖν Θέτιδι· κριτὴν δὲ γενόμενον Ποσειδῶνα κατακρῖναι ῎Αρην.
Photios, Novel History
“The Sixth book has the following table of contents: how Achilles, killed by Penthesileia, returned to life after his mother made this request, and then returned to Hades after killing Penthesileia”
τὸ δὲ ς̄ βιβλίον (sc. Πτολεμαίου) κεφάλαια περιέχει τάδε· ὡς ᾽Αχιλλεὺς ὑπὸ Πενθεσιλείας ἀναιρεθείς, δεηθείσης αὐτοῦ τῆς μητρὸς Θέτιδος, ἀναβιοῖ, καὶ ἀνελὼν Πενθεσίλειαν εἰς ῞Αιδου πάλιν ὑποστρέφει.
What?! How when I was studying this story from 2003-2007 did I not find these? Probably because I was focused on ancient sources. Ah, probably because these are Byzantine and Christian sources and therefore part of the culture I was investigating. Still weird to see this twist.
yeah, this is a wild one. It is not surprising but it is a variation on the theme so it is not thoroughly surprising. Still, it is fascinating!