As a macronarian sauropod, Tehuelchesaurus is thought to have had a body form better for reaching up to high growing vegetation rather than sweeping across a broad area to browse upon low growing vegetation like a diplodocid. Although only known from South America, Tehuelchesaurus is actually thought to be very similar in form to Omeisaurus from China. Tehuelchesaurus has been found in the Canadon Asfalto Formation and other sauropods from this formation include Patagosaurus and Volkheimeria.
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