Is this curious design a reminiscence of Atlantis and the three- pronged trident of Poseidon?

Waving his double- pronged trident in the air, the god struck the blue breast of Cyane, and the waters instantly parted.

Pent up forces in the west were loosed, and Neptune, deity of the ocean, with his three- pronged trident stalked abroad.

Now they were looking out at the Boboli's most famous spouting fountain-StoldoLorenzi's bronze of Neptune clutching his three-prongedtrident.