Ecological tiering and the evolution of a stem: the oldest stemmed frond from the Ediacaran of Newfoundland, Canada
The ecological segregation of large, multicellular eukaryotes in the Ediacaran in response to competitive feeding results in the evolution of novel morphological adaptations such as sturdy stems to elevate above lower-tier feeding guilds. Culmofrons plumosa n. gen. n. sp. lived attached to the ocean...
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Cambridge University Press (CUP)
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Online Access: | http://dx.doi.org/10.1666/11-044.1 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022336000000251 |
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crcambridgeupr:10.1666/11-044.1 2024-06-23T07:54:46+00:00 Ecological tiering and the evolution of a stem: the oldest stemmed frond from the Ediacaran of Newfoundland, Canada Laflamme, Marc Flude, Lija I. Narbonne, Guy M. 2012 http://dx.doi.org/10.1666/11-044.1 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022336000000251 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of Paleontology volume 86, issue 2, page 193-200 ISSN 0022-3360 1937-2337 journal-article 2012 crcambridgeupr https://doi.org/10.1666/11-044.1 2024-06-05T04:04:23Z The ecological segregation of large, multicellular eukaryotes in the Ediacaran in response to competitive feeding results in the evolution of novel morphological adaptations such as sturdy stems to elevate above lower-tier feeding guilds. Culmofrons plumosa n. gen. n. sp. lived attached to the ocean floor and probably fed osmotrophically from dissolved organic nutrients in the water column. Competition for nutrients with specialized lower-tiered organisms resulted in the evolution of a specialized non-feeding structure, drastically expanding the functional morphospace available to Ediacaran rangeomorphs. The first appearance of a cylindrical macroscopic stem in C. plumosa in the Briscal Formation of the Mistaken Point Ecological Reserve marks a significant departure from the modular repetitive branching typical of the Rangeomorpha, and exemplifies the importance of nutrient acquisition in early ecosystem engineering. Article in Journal/Newspaper Newfoundland Cambridge University Press Canada Mistaken Point ENVELOPE(-55.774,-55.774,53.478,53.478) Journal of Paleontology 86 2 193 200 |
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Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
The ecological segregation of large, multicellular eukaryotes in the Ediacaran in response to competitive feeding results in the evolution of novel morphological adaptations such as sturdy stems to elevate above lower-tier feeding guilds. Culmofrons plumosa n. gen. n. sp. lived attached to the ocean floor and probably fed osmotrophically from dissolved organic nutrients in the water column. Competition for nutrients with specialized lower-tiered organisms resulted in the evolution of a specialized non-feeding structure, drastically expanding the functional morphospace available to Ediacaran rangeomorphs. The first appearance of a cylindrical macroscopic stem in C. plumosa in the Briscal Formation of the Mistaken Point Ecological Reserve marks a significant departure from the modular repetitive branching typical of the Rangeomorpha, and exemplifies the importance of nutrient acquisition in early ecosystem engineering. |
format |
Article in Journal/Newspaper |
author |
Laflamme, Marc Flude, Lija I. Narbonne, Guy M. |
spellingShingle |
Laflamme, Marc Flude, Lija I. Narbonne, Guy M. Ecological tiering and the evolution of a stem: the oldest stemmed frond from the Ediacaran of Newfoundland, Canada |
author_facet |
Laflamme, Marc Flude, Lija I. Narbonne, Guy M. |
author_sort |
Laflamme, Marc |
title |
Ecological tiering and the evolution of a stem: the oldest stemmed frond from the Ediacaran of Newfoundland, Canada |
title_short |
Ecological tiering and the evolution of a stem: the oldest stemmed frond from the Ediacaran of Newfoundland, Canada |
title_full |
Ecological tiering and the evolution of a stem: the oldest stemmed frond from the Ediacaran of Newfoundland, Canada |
title_fullStr |
Ecological tiering and the evolution of a stem: the oldest stemmed frond from the Ediacaran of Newfoundland, Canada |
title_full_unstemmed |
Ecological tiering and the evolution of a stem: the oldest stemmed frond from the Ediacaran of Newfoundland, Canada |
title_sort |
ecological tiering and the evolution of a stem: the oldest stemmed frond from the ediacaran of newfoundland, canada |
publisher |
Cambridge University Press (CUP) |
publishDate |
2012 |
url |
http://dx.doi.org/10.1666/11-044.1 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022336000000251 |
long_lat |
ENVELOPE(-55.774,-55.774,53.478,53.478) |
geographic |
Canada Mistaken Point |
geographic_facet |
Canada Mistaken Point |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
Journal of Paleontology volume 86, issue 2, page 193-200 ISSN 0022-3360 1937-2337 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1666/11-044.1 |
container_title |
Journal of Paleontology |
container_volume |
86 |
container_issue |
2 |
container_start_page |
193 |
op_container_end_page |
200 |
_version_ |
1802647029905620992 |