"LOS ANGELES — Recently discovered dinosaur embryos are giving scientists their best glimpse yet into how the ancient creatures developed. The 190-million-year-old fossils unearthed in China belonged to Lufengosaurus, a long-necked, plant-eating dinosaur known for its gigantic size, with adults reaching 30 feet (9 metres)long. A detailed look at more than 200 bones from 20 individual animals at various stages of development revealed they grew much more rapidly inside the egg than other dinosaurs and flexed their muscles in much the same way as birds and humans. While not a complete surprise, “we are thrilled that we could document this for the first time for an extinct animal,” said University of Toronto paleontologist Robert Reisz, who led an international team that excavated the remains in southwestern China."
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