Marattiaceae synangia from the Lower Cretaceous of Antarctica
Marattiaceous ferns are conspicuous fossil element in upper Paleozoic and lower Mesozoic deposits, but become rarer to almost absent in Cretaceous to Holocene deposits. In this contribution, fragmentary synangia recovered from the Aptian Cerro Negro Formation (Livingston Island, Antarctica) are desc...
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ftconicet:oai:ri.conicet.gov.ar:11336/46831 2023-10-09T21:47:15+02:00 Marattiaceae synangia from the Lower Cretaceous of Antarctica Vera, Ezequiel Ignacio Cesari, Silvia Nelida application/pdf http://hdl.handle.net/11336/46831 eng eng Elsevier Science info:eu-repo/semantics/altIdentifier/doi/10.1016/j.revpalbo.2016.09.007 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0034666716301051 http://hdl.handle.net/11336/46831 Vera, Ezequiel Ignacio; Cesari, Silvia Nelida; Marattiaceae synangia from the Lower Cretaceous of Antarctica; Elsevier Science; Review of Palaeobotany and Palynology; 235; 12-2016; 6-10 0034-6667 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ ANTARCTICA CRETACEOUS EUSPORANGIATE FERNS FOSSIL MARATTIACEAE https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 https://purl.org/becyt/ford/1.6 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1016/j.revpalbo.2016.09.007 2023-09-24T20:27:55Z Marattiaceous ferns are conspicuous fossil element in upper Paleozoic and lower Mesozoic deposits, but become rarer to almost absent in Cretaceous to Holocene deposits. In this contribution, fragmentary synangia recovered from the Aptian Cerro Negro Formation (Livingston Island, Antarctica) are described. Synangia are bivalvate, containing at least four lachrymiform sporangia per valve. Valves are fused at the base, and connect to the leaf blade by a short peduncle. Sporangia contain more than 400 oval to reniform (probably monolete), smooth to microgranulate spores. The reproductive structures have morphological similarities with extant Marattia and Ptisana, and the apparent absence of labia suggests a closer relationship with the latter genus. The presence of Marattiaceae, along with previously described ferns (e.g. Cyatheales) supports warm climatic conditions during the Aptian in this region of Antarctica. Fil: Vera, Ezequiel Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología; Argentina Fil: Cesari, Silvia Nelida. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina Article in Journal/Newspaper Antarc* Antarctica Livingston Island CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Argentina Argentino Cerro Negro ENVELOPE(-61.002,-61.002,-62.655,-62.655) Livingston Island ENVELOPE(-60.500,-60.500,-62.600,-62.600) Silvia ENVELOPE(-57.900,-57.900,-63.300,-63.300) Review of Palaeobotany and Palynology 235 6 10 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
ANTARCTICA CRETACEOUS EUSPORANGIATE FERNS FOSSIL MARATTIACEAE https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 https://purl.org/becyt/ford/1.6 |
spellingShingle |
ANTARCTICA CRETACEOUS EUSPORANGIATE FERNS FOSSIL MARATTIACEAE https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 https://purl.org/becyt/ford/1.6 Vera, Ezequiel Ignacio Cesari, Silvia Nelida Marattiaceae synangia from the Lower Cretaceous of Antarctica |
topic_facet |
ANTARCTICA CRETACEOUS EUSPORANGIATE FERNS FOSSIL MARATTIACEAE https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 https://purl.org/becyt/ford/1.6 |
description |
Marattiaceous ferns are conspicuous fossil element in upper Paleozoic and lower Mesozoic deposits, but become rarer to almost absent in Cretaceous to Holocene deposits. In this contribution, fragmentary synangia recovered from the Aptian Cerro Negro Formation (Livingston Island, Antarctica) are described. Synangia are bivalvate, containing at least four lachrymiform sporangia per valve. Valves are fused at the base, and connect to the leaf blade by a short peduncle. Sporangia contain more than 400 oval to reniform (probably monolete), smooth to microgranulate spores. The reproductive structures have morphological similarities with extant Marattia and Ptisana, and the apparent absence of labia suggests a closer relationship with the latter genus. The presence of Marattiaceae, along with previously described ferns (e.g. Cyatheales) supports warm climatic conditions during the Aptian in this region of Antarctica. Fil: Vera, Ezequiel Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología; Argentina Fil: Cesari, Silvia Nelida. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina |
format |
Article in Journal/Newspaper |
author |
Vera, Ezequiel Ignacio Cesari, Silvia Nelida |
author_facet |
Vera, Ezequiel Ignacio Cesari, Silvia Nelida |
author_sort |
Vera, Ezequiel Ignacio |
title |
Marattiaceae synangia from the Lower Cretaceous of Antarctica |
title_short |
Marattiaceae synangia from the Lower Cretaceous of Antarctica |
title_full |
Marattiaceae synangia from the Lower Cretaceous of Antarctica |
title_fullStr |
Marattiaceae synangia from the Lower Cretaceous of Antarctica |
title_full_unstemmed |
Marattiaceae synangia from the Lower Cretaceous of Antarctica |
title_sort |
marattiaceae synangia from the lower cretaceous of antarctica |
publisher |
Elsevier Science |
url |
http://hdl.handle.net/11336/46831 |
long_lat |
ENVELOPE(-61.002,-61.002,-62.655,-62.655) ENVELOPE(-60.500,-60.500,-62.600,-62.600) ENVELOPE(-57.900,-57.900,-63.300,-63.300) |
geographic |
Argentina Argentino Cerro Negro Livingston Island Silvia |
geographic_facet |
Argentina Argentino Cerro Negro Livingston Island Silvia |
genre |
Antarc* Antarctica Livingston Island |
genre_facet |
Antarc* Antarctica Livingston Island |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.revpalbo.2016.09.007 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0034666716301051 http://hdl.handle.net/11336/46831 Vera, Ezequiel Ignacio; Cesari, Silvia Nelida; Marattiaceae synangia from the Lower Cretaceous of Antarctica; Elsevier Science; Review of Palaeobotany and Palynology; 235; 12-2016; 6-10 0034-6667 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
op_doi |
https://doi.org/10.1016/j.revpalbo.2016.09.007 |
container_title |
Review of Palaeobotany and Palynology |
container_volume |
235 |
container_start_page |
6 |
op_container_end_page |
10 |
_version_ |
1779310230309437440 |