Data from: Ontogeny of the Furongian (late Cambrian) trilobite Proceratopyge cf. P. Lata Whitehouse from northern Victoria Land, Antarctica, and the evolution of metamorphosis in trilobites
There were multiple origins of metamorphosis-undergoing protaspides in trilobite evolution: within the superfamilies Remopleuridioidea, Trinucleoidea, and within the Order Asaphida. Recent studies have revealed that the protaspides of the Cambrian representatives of the Remopleuridioidea and the Tri...
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ftdryad:oai:v1.datadryad.org:10255/dryad.119633 2023-05-15T13:31:23+02:00 Data from: Ontogeny of the Furongian (late Cambrian) trilobite Proceratopyge cf. P. Lata Whitehouse from northern Victoria Land, Antarctica, and the evolution of metamorphosis in trilobites Park, Tae-Yoon S. Kihm, Ji-Hoon Woo, Jusun Kim, Young-Hwan G. Lee, Jong-Ik Northern Victoria Land Antarctica Cambrian Furongian 2016-08-01T17:15:17Z http://hdl.handle.net/10255/dryad.119633 https://doi.org/10.5061/dryad.mm4cc unknown doi:10.5061/dryad.mm4cc/1 doi:10.5061/dryad.mm4cc/2 doi:10.5061/dryad.mm4cc/3 doi:10.5061/dryad.mm4cc/4 doi:10.1111/pala.12251 doi:10.5061/dryad.mm4cc Park TS, Kihm J, Woo J, Kim YG, Lee J (2016) Ontogeny of the Furongian (late Cambrian) trilobite Proceratopyge cf. P. Lata Whitehouse from northern Victoria Land, Antarctica, and the evolution of metamorphosis in trilobites. Palaeontology 59(5): 657-670. 1475-4983 http://hdl.handle.net/10255/dryad.119633 metamorphosis Cambrian Ordovician trilobite protaspis Article 2016 ftdryad https://doi.org/10.5061/dryad.mm4cc https://doi.org/10.5061/dryad.mm4cc/1 https://doi.org/10.5061/dryad.mm4cc/2 https://doi.org/10.5061/dryad.mm4cc/3 https://doi.org/10.5061/dryad.mm4cc/4 https://doi.org/10.1111/pala.12251 2020-01-01T15:36:52Z There were multiple origins of metamorphosis-undergoing protaspides in trilobite evolution: within the superfamilies Remopleuridioidea, Trinucleoidea, and within the Order Asaphida. Recent studies have revealed that the protaspides of the Cambrian representatives of the Remopleuridioidea and the Trinucleoidea did not undergo metamorphosis. However, ontogeny of the Cambrian members of the Order Asaphida has remained unknown. This study documents the ontogeny of the Furongian asaphoidean ceratopygid trilobite, Proceratopyge cf. P. lata Whitehouse, from northern Victoria Land, Antarctica. Two stages for the protaspid phase, five developmental stages for the post-protaspid cranidia, and ten stages for the post-protaspid pygidia have been identified. Interestingly, the protaspis directly developed into a meraspis without metamorphosis. A new cladistic analysis resulted in a single most parsimonious tree, according to which the presence of the bulbous commutavi protaspis turns out to be a synapomorphy for Asaphidae + Cyclopygoidea, not a synapomorphy for the Order Asaphida as previously suggested. In addition, it is inferred that there was convergent evolution of indirectly-developing commutavi protaspides during the Furongian and Early Ordovician. Metamorphosis-entailing planktonic larvae evolved in many different metazoan lineages near the Cambrian–Ordovician transition, due to the escalating ecological pressure of the Great Ordovician Biodiversification Event. Since the bulbous commutavi protaspid morphology is thought to be an adaptation for a planktonic life mode, the convergent evolution of the indirect development in the three trilobite lineages at this period might have been a result of adaptation to the early phase of the Great Ordovician Biodiversification Event. Article in Journal/Newspaper Antarc* Antarctica Victoria Land Dryad Digital Repository (Duke University) Victoria Land |
institution |
Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
metamorphosis Cambrian Ordovician trilobite protaspis |
spellingShingle |
metamorphosis Cambrian Ordovician trilobite protaspis Park, Tae-Yoon S. Kihm, Ji-Hoon Woo, Jusun Kim, Young-Hwan G. Lee, Jong-Ik Data from: Ontogeny of the Furongian (late Cambrian) trilobite Proceratopyge cf. P. Lata Whitehouse from northern Victoria Land, Antarctica, and the evolution of metamorphosis in trilobites |
topic_facet |
metamorphosis Cambrian Ordovician trilobite protaspis |
description |
There were multiple origins of metamorphosis-undergoing protaspides in trilobite evolution: within the superfamilies Remopleuridioidea, Trinucleoidea, and within the Order Asaphida. Recent studies have revealed that the protaspides of the Cambrian representatives of the Remopleuridioidea and the Trinucleoidea did not undergo metamorphosis. However, ontogeny of the Cambrian members of the Order Asaphida has remained unknown. This study documents the ontogeny of the Furongian asaphoidean ceratopygid trilobite, Proceratopyge cf. P. lata Whitehouse, from northern Victoria Land, Antarctica. Two stages for the protaspid phase, five developmental stages for the post-protaspid cranidia, and ten stages for the post-protaspid pygidia have been identified. Interestingly, the protaspis directly developed into a meraspis without metamorphosis. A new cladistic analysis resulted in a single most parsimonious tree, according to which the presence of the bulbous commutavi protaspis turns out to be a synapomorphy for Asaphidae + Cyclopygoidea, not a synapomorphy for the Order Asaphida as previously suggested. In addition, it is inferred that there was convergent evolution of indirectly-developing commutavi protaspides during the Furongian and Early Ordovician. Metamorphosis-entailing planktonic larvae evolved in many different metazoan lineages near the Cambrian–Ordovician transition, due to the escalating ecological pressure of the Great Ordovician Biodiversification Event. Since the bulbous commutavi protaspid morphology is thought to be an adaptation for a planktonic life mode, the convergent evolution of the indirect development in the three trilobite lineages at this period might have been a result of adaptation to the early phase of the Great Ordovician Biodiversification Event. |
format |
Article in Journal/Newspaper |
author |
Park, Tae-Yoon S. Kihm, Ji-Hoon Woo, Jusun Kim, Young-Hwan G. Lee, Jong-Ik |
author_facet |
Park, Tae-Yoon S. Kihm, Ji-Hoon Woo, Jusun Kim, Young-Hwan G. Lee, Jong-Ik |
author_sort |
Park, Tae-Yoon S. |
title |
Data from: Ontogeny of the Furongian (late Cambrian) trilobite Proceratopyge cf. P. Lata Whitehouse from northern Victoria Land, Antarctica, and the evolution of metamorphosis in trilobites |
title_short |
Data from: Ontogeny of the Furongian (late Cambrian) trilobite Proceratopyge cf. P. Lata Whitehouse from northern Victoria Land, Antarctica, and the evolution of metamorphosis in trilobites |
title_full |
Data from: Ontogeny of the Furongian (late Cambrian) trilobite Proceratopyge cf. P. Lata Whitehouse from northern Victoria Land, Antarctica, and the evolution of metamorphosis in trilobites |
title_fullStr |
Data from: Ontogeny of the Furongian (late Cambrian) trilobite Proceratopyge cf. P. Lata Whitehouse from northern Victoria Land, Antarctica, and the evolution of metamorphosis in trilobites |
title_full_unstemmed |
Data from: Ontogeny of the Furongian (late Cambrian) trilobite Proceratopyge cf. P. Lata Whitehouse from northern Victoria Land, Antarctica, and the evolution of metamorphosis in trilobites |
title_sort |
data from: ontogeny of the furongian (late cambrian) trilobite proceratopyge cf. p. lata whitehouse from northern victoria land, antarctica, and the evolution of metamorphosis in trilobites |
publishDate |
2016 |
url |
http://hdl.handle.net/10255/dryad.119633 https://doi.org/10.5061/dryad.mm4cc |
op_coverage |
Northern Victoria Land Antarctica Cambrian Furongian |
geographic |
Victoria Land |
geographic_facet |
Victoria Land |
genre |
Antarc* Antarctica Victoria Land |
genre_facet |
Antarc* Antarctica Victoria Land |
op_relation |
doi:10.5061/dryad.mm4cc/1 doi:10.5061/dryad.mm4cc/2 doi:10.5061/dryad.mm4cc/3 doi:10.5061/dryad.mm4cc/4 doi:10.1111/pala.12251 doi:10.5061/dryad.mm4cc Park TS, Kihm J, Woo J, Kim YG, Lee J (2016) Ontogeny of the Furongian (late Cambrian) trilobite Proceratopyge cf. P. Lata Whitehouse from northern Victoria Land, Antarctica, and the evolution of metamorphosis in trilobites. Palaeontology 59(5): 657-670. 1475-4983 http://hdl.handle.net/10255/dryad.119633 |
op_doi |
https://doi.org/10.5061/dryad.mm4cc https://doi.org/10.5061/dryad.mm4cc/1 https://doi.org/10.5061/dryad.mm4cc/2 https://doi.org/10.5061/dryad.mm4cc/3 https://doi.org/10.5061/dryad.mm4cc/4 https://doi.org/10.1111/pala.12251 |
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1766017827183001600 |