New species of osmundaceous fertile leaves from the upper Triassic of Argentina
A new species of Osmundopsis Harris is described based on several impression-compression fossils from the upper section of the Potrerillos Formation (Uspallata Group) at Cerro Cacheuta Hill, Mendoza Province, Argentina. Osmundopsis zunigai sp. nov. is characterized by having fertile pinnae with a sl...
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W. Szafer Institute of Botany, Polish Academy of Sciences
2018
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ftdoajarticles:oai:doaj.org/article:9daf086c52214dfba2571dd85c720555 2023-05-15T14:01:43+02:00 New species of osmundaceous fertile leaves from the upper Triassic of Argentina ELIANA P. COTUREL JOSEFINA BODNAR EDUARDO M. MOREL DANIEL G. GANUZA ANA J. SAGASTI MARISOL BELTRÁN 2018-12-01T00:00:00Z https://doi.org/10.2478/acpa-2018-0014 https://doaj.org/article/9daf086c52214dfba2571dd85c720555 EN eng W. Szafer Institute of Botany, Polish Academy of Sciences https://acpa.botany.pl/New-species-of-osmundaceous-fertile-leaves-from-the-upper-Triassic-of-Argentina,118490,0,2.html https://doaj.org/toc/2082-0259 2082-0259 doi:10.2478/acpa-2018-0014 https://doaj.org/article/9daf086c52214dfba2571dd85c720555 Acta Palaeobotanica, Vol 58, Iss 2, Pp 107-119 (2018) smundopsis osmundaceae carnian potrerillos formation mendoza province Paleontology QE701-760 Botany QK1-989 article 2018 ftdoajarticles https://doi.org/10.2478/acpa-2018-0014 2022-12-30T19:34:48Z A new species of Osmundopsis Harris is described based on several impression-compression fossils from the upper section of the Potrerillos Formation (Uspallata Group) at Cerro Cacheuta Hill, Mendoza Province, Argentina. Osmundopsis zunigai sp. nov. is characterized by having fertile pinnae with a slender striate rachis, bearing widely separate, opposite to subopposite short falcate pinnules with an entire margin, rounded apex, and a partially reduced lamina. The pinnules bear sporangia loosely disposed in clusters of four or five on the abaxial side. The sporangia are wedge- to heart-shaped, shortly stalked, with cells of the apical region thickened, and have a vertical dehiscence slit. The spores are trilete and laevigate. This is the first record of Osmundopsis in the Triassic of Argentina. The mutual occurrence or co-preservation of Osmundopsis zunigai sp. nov. with sterile fronds of Cladophlebis kurtzi suggests the possibility that these species formed part of a dimorphic bipinnate frond. The diversity and geographic extent of fertile leaves of the Osmunda lineage in the early Late Triassic, with records in South Africa and Antarctica and now with this new taxon, support the idea of a moist mesothermal climatic belt in southern Gondwana. Article in Journal/Newspaper Antarc* Antarctica Directory of Open Access Journals: DOAJ Articles Argentina Uspallata ENVELOPE(-66.867,-66.867,-68.183,-68.183) Acta Palaeobotanica 58 2 107 119 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
smundopsis osmundaceae carnian potrerillos formation mendoza province Paleontology QE701-760 Botany QK1-989 |
spellingShingle |
smundopsis osmundaceae carnian potrerillos formation mendoza province Paleontology QE701-760 Botany QK1-989 ELIANA P. COTUREL JOSEFINA BODNAR EDUARDO M. MOREL DANIEL G. GANUZA ANA J. SAGASTI MARISOL BELTRÁN New species of osmundaceous fertile leaves from the upper Triassic of Argentina |
topic_facet |
smundopsis osmundaceae carnian potrerillos formation mendoza province Paleontology QE701-760 Botany QK1-989 |
description |
A new species of Osmundopsis Harris is described based on several impression-compression fossils from the upper section of the Potrerillos Formation (Uspallata Group) at Cerro Cacheuta Hill, Mendoza Province, Argentina. Osmundopsis zunigai sp. nov. is characterized by having fertile pinnae with a slender striate rachis, bearing widely separate, opposite to subopposite short falcate pinnules with an entire margin, rounded apex, and a partially reduced lamina. The pinnules bear sporangia loosely disposed in clusters of four or five on the abaxial side. The sporangia are wedge- to heart-shaped, shortly stalked, with cells of the apical region thickened, and have a vertical dehiscence slit. The spores are trilete and laevigate. This is the first record of Osmundopsis in the Triassic of Argentina. The mutual occurrence or co-preservation of Osmundopsis zunigai sp. nov. with sterile fronds of Cladophlebis kurtzi suggests the possibility that these species formed part of a dimorphic bipinnate frond. The diversity and geographic extent of fertile leaves of the Osmunda lineage in the early Late Triassic, with records in South Africa and Antarctica and now with this new taxon, support the idea of a moist mesothermal climatic belt in southern Gondwana. |
format |
Article in Journal/Newspaper |
author |
ELIANA P. COTUREL JOSEFINA BODNAR EDUARDO M. MOREL DANIEL G. GANUZA ANA J. SAGASTI MARISOL BELTRÁN |
author_facet |
ELIANA P. COTUREL JOSEFINA BODNAR EDUARDO M. MOREL DANIEL G. GANUZA ANA J. SAGASTI MARISOL BELTRÁN |
author_sort |
ELIANA P. COTUREL |
title |
New species of osmundaceous fertile leaves from the upper Triassic of Argentina |
title_short |
New species of osmundaceous fertile leaves from the upper Triassic of Argentina |
title_full |
New species of osmundaceous fertile leaves from the upper Triassic of Argentina |
title_fullStr |
New species of osmundaceous fertile leaves from the upper Triassic of Argentina |
title_full_unstemmed |
New species of osmundaceous fertile leaves from the upper Triassic of Argentina |
title_sort |
new species of osmundaceous fertile leaves from the upper triassic of argentina |
publisher |
W. Szafer Institute of Botany, Polish Academy of Sciences |
publishDate |
2018 |
url |
https://doi.org/10.2478/acpa-2018-0014 https://doaj.org/article/9daf086c52214dfba2571dd85c720555 |
long_lat |
ENVELOPE(-66.867,-66.867,-68.183,-68.183) |
geographic |
Argentina Uspallata |
geographic_facet |
Argentina Uspallata |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Acta Palaeobotanica, Vol 58, Iss 2, Pp 107-119 (2018) |
op_relation |
https://acpa.botany.pl/New-species-of-osmundaceous-fertile-leaves-from-the-upper-Triassic-of-Argentina,118490,0,2.html https://doaj.org/toc/2082-0259 2082-0259 doi:10.2478/acpa-2018-0014 https://doaj.org/article/9daf086c52214dfba2571dd85c720555 |
op_doi |
https://doi.org/10.2478/acpa-2018-0014 |
container_title |
Acta Palaeobotanica |
container_volume |
58 |
container_issue |
2 |
container_start_page |
107 |
op_container_end_page |
119 |
_version_ |
1766271762442485760 |