Neptune (mythology) to. Poseidon on the other hand underwent the process of becoming the main god of the sea at a much earlier time, as is shown in the Iliad. In the earlier times it was the god Portunus or Fortunus who was thanked for naval victories, but Neptune supplanted him in this role by at least the first century BC when Sextus Pompeius called himself "son of Neptune." For a time he was paired with Salacia, the goddess of the salt water. Neptune was also considered the legendary progenitor god of a Latin stock, the Faliscans, who called themselves "Neptunia proles".
Neptune (mythology) that Neptune was offered the sacrifice of a bull would point to an agricultural fertility context. In Rome Neptune had only one temple. It stood near the Circus Flaminius, the Roman racetrack, in the southern part of the Campus Martius. It already existed in 206 BC. It appears on a coin struck by Gn. Domitius Ahenobarbus around 40 BC doubtless because of a restoration carried out by this personage. It contained a famous sculpture of a marine group by Scopas Minor. The Basilica Neptuni, was built on the Campus Martius and dedicated by Agrippa in honour of the naval victory