Mussaurus: quick facts

With the discovery in southern Argentina of adults andyoung hatchlings, Mussaurus is the earliest known dinosaur babyand the eggshells represent the oldest known dinosaur eggs. While no whole eggs hav

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Reference background: Natural History Museum, London — Dinosaurs; Smithsonian National Museum of Natural History — Dinosaurs; American Museum of Natural History — Dinosaurs & Fossils. Figures are typical published ranges; taxonomy follows the source era and modern consensus is noted where it differs. See our sources & fact-check policy.