Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/131552
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Type: | Journal article |
Title: | Disparate compound eyes of Cambrian radiodonts reveal their developmental growth mode and diverse visual ecology |
Author: | Paterson, J.R. Edgecombe, G.D. Garcia-Bellido, D. |
Citation: | Science Advances, 2020; 6(49):1-10 |
Publisher: | American Association for the Advancement of Science |
Issue Date: | 2020 |
ISSN: | 2375-2548 2375-2548 |
Statement of Responsibility: | John R. Paterson, Gregory D. Edgecombe and Diego C. García-Bellido |
Abstract: | Radiodonts are nektonic stem-group euarthropods that played various trophic roles in Paleozoic marine ecosystems, but information on their vision is limited. Optical details exist only in one species from the Cambrian Emu Bay Shale of Australia, here assigned to Anomalocaris aff. canadensis We identify another type of radiodont compound eye from this deposit, belonging to 'Anomalocaris' briggsi This ≤4-cm sessile eye has >13,000 lenses and a dorsally oriented acute zone. In both taxa, lenses were added marginally and increased in size and number throughout development, as in many crown-group euarthropods. Both species' eyes conform to their inferred lifestyles: The macrophagous predator A. aff. canadensis has acute stalked eyes (>24,000 lenses each) adapted for hunting in well-lit waters, whereas the suspension-feeding 'A.' briggsi could detect plankton in dim down-welling light. Radiodont eyes further demonstrate the group's anatomical and ecological diversity and reinforce the crucial role of vision in early animal ecosystems. |
Keywords: | Animals Arthropods Ecosystem Fossils Vision, Ocular Biological Evolution |
Rights: | © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC) |
DOI: | 10.1126/sciadv.abc6721 |
Grant ID: | http://purl.org/au-research/grants/arc/FT120100770 http://purl.org/au-research/grants/arc/FT130101329 http://purl.org/au-research/grants/arc/DP200102005 |
Published version: | http://dx.doi.org/10.1126/sciadv.abc6721 |
Appears in Collections: | Aurora harvest 4 Geology & Geophysics publications |
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hdl_131552.pdf | 2.26 MB | Adobe PDF | View/Open |
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