The oral cone of Anomalocaris is not a classic ''peytoia''.
The Cambro-Ordovician anomalocaridids are large ecdysozoans commonly regarded as ancestors of the arthropods and apex predators. Predation is indicated partly by the presence of an unusual "peytoia"-type oral cone, which is a tetraradial outer ring of 32 plates, four of which are enlarged...
| Main Authors: | , |
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| Format: | Journal article |
| Language: | English |
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2012
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| _version_ | 1797095578414350336 |
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| author | Daley, A Bergström, J |
| author_facet | Daley, A Bergström, J |
| author_sort | Daley, A |
| collection | OXFORD |
| description | The Cambro-Ordovician anomalocaridids are large ecdysozoans commonly regarded as ancestors of the arthropods and apex predators. Predation is indicated partly by the presence of an unusual "peytoia"-type oral cone, which is a tetraradial outer ring of 32 plates, four of which are enlarged and in perpendicular arrangement. This oral cone morphology was considered a highly consistent and defining characteristic of well-known Burgess Shale taxa. It is here shown that Anomalocaris has a different oral cone, with only three large plates and a variable number of smaller and medium plates. Its functional morphology suggests that suction, rather than biting, was used for food ingestion, and that anomalocaridids in general employed a range of different scavenging and predatory feeding strategies. Removing anomalocaridids from the position of highly specialized trilobite predators forces a reconsideration of the ecological structure of the earliest marine animal communities in the Cambrian. |
| first_indexed | 2024-03-07T04:29:51Z |
| format | Journal article |
| id | oxford-uuid:cdee331b-eac2-4a79-9ba0-b19f83cfc7cb |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:29:51Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | oxford-uuid:cdee331b-eac2-4a79-9ba0-b19f83cfc7cb2022-03-27T07:32:07ZThe oral cone of Anomalocaris is not a classic ''peytoia''.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:cdee331b-eac2-4a79-9ba0-b19f83cfc7cbEnglishSymplectic Elements at Oxford2012Daley, ABergström, JThe Cambro-Ordovician anomalocaridids are large ecdysozoans commonly regarded as ancestors of the arthropods and apex predators. Predation is indicated partly by the presence of an unusual "peytoia"-type oral cone, which is a tetraradial outer ring of 32 plates, four of which are enlarged and in perpendicular arrangement. This oral cone morphology was considered a highly consistent and defining characteristic of well-known Burgess Shale taxa. It is here shown that Anomalocaris has a different oral cone, with only three large plates and a variable number of smaller and medium plates. Its functional morphology suggests that suction, rather than biting, was used for food ingestion, and that anomalocaridids in general employed a range of different scavenging and predatory feeding strategies. Removing anomalocaridids from the position of highly specialized trilobite predators forces a reconsideration of the ecological structure of the earliest marine animal communities in the Cambrian. |
| spellingShingle | Daley, A Bergström, J The oral cone of Anomalocaris is not a classic ''peytoia''. |
| title | The oral cone of Anomalocaris is not a classic ''peytoia''. |
| title_full | The oral cone of Anomalocaris is not a classic ''peytoia''. |
| title_fullStr | The oral cone of Anomalocaris is not a classic ''peytoia''. |
| title_full_unstemmed | The oral cone of Anomalocaris is not a classic ''peytoia''. |
| title_short | The oral cone of Anomalocaris is not a classic ''peytoia''. |
| title_sort | oral cone of anomalocaris is not a classic peytoia |
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