When reconstructing titanosaurs with no known skull material, you can pretty much go one of two ways: the macronarian style like Sarmientosaurus or the more diplodocid style like Rapetosaurus.

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When Sarmientosaurus was discovered, it was found with an almost complete skull with lower jaws, articulated with the first seven vertebrae of the front neck.

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21. For 🦕, here’s an obscure from South America, (“lizard from Sarmiento”). Artwork by .

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No new Argentinosaurus skull material was found/described to my knowledge, but it does resemble other skulls of loosely-related titanosaurs.

(left to right: Nemegtosaurus, Tapuiasaurus, and Sarmientosaurus)

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Sarmientosaurus musacchioi //

It had a small brain, but its massive eye sockets indicated a sharp vision, a unique discovery among the sauropods. Due to their gigantic size, sauropods are rarely preserved and found as a complete animal.

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Sarmientosaurus musacchioi // Joschua Knüppe
It had a small brain compared to its body, but its massive eyeballs indicated sharp vision.

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