Eoraptor lunensis

dinosaur

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July 20, 2026

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Eoraptor lunensis was a primitive dinosaur discovered in Argentina. It is considered one of the earliest known dinosaurs, dating back to approximately 230 million years ago during the Late Triassic period. Paleontologist Paul Sereno named Eoraptor lunensis in 1993, determining it to be the most primitive dinosaur because it lacked specialized features found in later species. This discovery supported the theory that all dinosaurs originated from small, bipedal, carnivorous ancestors. Eoraptor was a theropod, a subgroup of saurischian dinosaurs that included all flesh-eating species.12

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Paul Sereno
…dinosaur, which Sereno later named Eoraptor lunensis. He determined that Eoraptor, found in the Ischigualasto Formation, was the most primitive because it had not developed any of the specialized features found in later dinosaurs. He said that it definitely confirmed the theory that all dinosaurs stemmed from small carnivorous bipedal…
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…dinosaur, which Sereno later named Eoraptor lunensis. He determined that Eoraptor, found in the Ischigualasto Formation, was the most primitive because it had not developed any of the specialized features found in later dinosaurs. He said that it definitely confirmed the theory that all dinosaurs stemmed from small carnivorous bipedal…
Read More