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Brief Communications
Nature 431, 145-146 (9 September 2004) | doi:10.1038/431145a; Published online 8 September 2004
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A proposal for stable expression of an enzyme in corn seed is desired.
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The Seeker is looking for an efficient chromosome doubling method in plants and in particular, metho...
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Palaeontology: Parental care in an ornithischian dinosaur
Qingjin Meng1, Jinyuan Liu1, David J. Varricchio2, Timothy Huang3 & Chunling Gao1
Abstract
A dramatic fossil may shed light on how modern archosaurs became devoted parents.
Abstract
Crocodilians and birds show extensive parental care of their young1, 2, but whether this behaviour evolved independently in these two groups of living archosaurs is unknown — in part because features of parenting among related fossil groups such as dinosaurs3 are unclear. A dramatic specimen of the small ornithischian dinosaur Psittacosaurus sp. (Dalian Natural History Museum D2156) from Liaoning in China reveals a single adult clustered with 34 juveniles within an area of 0.5 square metres, providing strong evidence for post-hatching parental care in Dinosauria.
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