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Triassic reptiles had live young
The Scientist 2004, 18(23):26
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The largest and most diverse group of Triassic aquatic reptiles gave birth to live young, researchers recently reported.[1]
The finding represents the first evidence of viviparity in sauropterygians, which lived throughout the Mesozoic era, from 250 to 65 million years ago. The evidence came in the form of two small, nearly complete, pregnant specimens of Keichousaurus hui, a sauroptery-gian found in the Guizhou province of southwestern China. The females settle a long-time debate about whether this group was oviparous or viviparous, says Xiao-chun Wu, an author on the study at the Canadian Museum of Nature.
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