期刊
NATURE ECOLOGY & EVOLUTION
卷 1, 期 8, 页码 1201-1204出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41559-017-0222-7
关键词
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资金
- Palaeontological Association Research Grant [PA-RG201501]
- ELSI Origins Network (EON) Research Fellowship - John Templeton Foundation
Macroscale rangeomorph fossils, with characteristic branching fronds, appear (571 Myr ago) after the Gaskiers glaciation (580 Myr ago). However, biological mechanisms of size growth and potential connections to ocean geochemistry were untested. Using micro-computerized tomography and photographic measurements, alongside mathematical and computer models, we demonstrate that growth of rangeomorph branch internodes declined as their relative surface area decreased. This suggests that frond size and shape were directly responsive to nutrient uptake.
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