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Nutrient-dependent growth underpinned the Ediacaran transition to large body size

Hoyal Cuthill, Jennifer F and Conway Morris, Simon (2017) 'Nutrient-dependent growth underpinned the Ediacaran transition to large body size.' Nature Ecology and Evolution, 1 (8). pp. 1201-1204. ISSN 2397-334X

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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.

Item Type: Article
Uncontrolled Keywords: Animals; Invertebrates; Body Size; Diet; Fossils; Biological Evolution
Divisions: Faculty of Science and Health
Faculty of Science and Health > Life Sciences, School of
SWORD Depositor: Elements
Depositing User: Elements
Date Deposited: 19 Nov 2019 11:43
Last Modified: 18 Aug 2022 10:41

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