First record of Harpagomyces (Eumycota, incertae sedis) in Cenozoic sediments, lower Colorado Basin, Argentina

Autores
Fernández, Ana L.; Grill, Silvia; Seifert, Keith; Bianchinotti, Virginia; Martínez, Gustavo Adolfo
Año de publicación
2010
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Harpagomyces Wilcz (Eumycota, incertae sedis) was registered in stratigraphic sections associated to archaeological sites in the Colorado Basin (Buenos Aires, Argentina). Since its description, no other record of this species appeared in literature, being the first appearance in the fossil record. Originally isolated from wastes, it was illustrated as having irregular structures with hook-like appendages that were described as conidia. We found simple and ramified filaments of thick-walled, pale brown, verrucose, cylindrical to somewhat doliform cells. Some cells bear one, two or rarely more lateral appendages, which were pale, thin-walled and smooth, taper to apex, and ended in two or three forked and pointed arms. The collected material agrees fairly well with Harpagomyces lomnickii Wilcz, recovered from late Pleistocene/Holocene La Salada and El Tigre archaeological sites. La Salada section is an outcrop where eolic sediments alternate with pedogenetic and lacustrine levels, the archaeological findings are restricted to the last 20cm section from the surface. In this sequence, Harpagomyces was recorded in sediments dated as old as 3564 years BP (OCR) at 72.5cm depth from the top. There, the pollen association registered corresponds to halophytic steppe with influence of the ecotone and/or the Patagonian steppe. El Tigre section consists of an alternation of eolic and fluvial facies associated with terraced levels and flood plains, involving the last 3000 cal. AP (OCR). Harpagomyces was registered in 12 palynological samples (181-1627 years BP, OCR) between 1.25cm and 2.05cm from the surface. The pollen association registered in this interval corresponds to halophytic steppe.
Simposio VI: Microfósiles del Mesozoico y Cenozoico de América del Sur y Antártida. Nuevas aplicaciones y problemáticas asociadas
Facultad de Ciencias Naturales y Museo
Materia
Ciencias Naturales
Paleontología
Harpagomyces (Eumycota, incertae sedis)
Cenozoic sediments
Lower Colorado Basin, Argentina
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/16689

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spelling First record of Harpagomyces (Eumycota, incertae sedis) in Cenozoic sediments, lower Colorado Basin, ArgentinaFernández, Ana L.Grill, SilviaSeifert, KeithBianchinotti, VirginiaMartínez, Gustavo AdolfoCiencias NaturalesPaleontologíaHarpagomyces (Eumycota, incertae sedis)Cenozoic sedimentsLower Colorado Basin, ArgentinaHarpagomyces Wilcz (Eumycota, incertae sedis) was registered in stratigraphic sections associated to archaeological sites in the Colorado Basin (Buenos Aires, Argentina). Since its description, no other record of this species appeared in literature, being the first appearance in the fossil record. Originally isolated from wastes, it was illustrated as having irregular structures with hook-like appendages that were described as conidia. We found simple and ramified filaments of thick-walled, pale brown, verrucose, cylindrical to somewhat doliform cells. Some cells bear one, two or rarely more lateral appendages, which were pale, thin-walled and smooth, taper to apex, and ended in two or three forked and pointed arms. The collected material agrees fairly well with Harpagomyces lomnickii Wilcz, recovered from late Pleistocene/Holocene La Salada and El Tigre archaeological sites. La Salada section is an outcrop where eolic sediments alternate with pedogenetic and lacustrine levels, the archaeological findings are restricted to the last 20cm section from the surface. In this sequence, Harpagomyces was recorded in sediments dated as old as 3564 years BP (OCR) at 72.5cm depth from the top. There, the pollen association registered corresponds to halophytic steppe with influence of the ecotone and/or the Patagonian steppe. El Tigre section consists of an alternation of eolic and fluvial facies associated with terraced levels and flood plains, involving the last 3000 cal. AP (OCR). Harpagomyces was registered in 12 palynological samples (181-1627 years BP, OCR) between 1.25cm and 2.05cm from the surface. The pollen association registered in this interval corresponds to halophytic steppe.Simposio VI: Microfósiles del Mesozoico y Cenozoico de América del Sur y Antártida. Nuevas aplicaciones y problemáticas asociadasFacultad de Ciencias Naturales y Museo2010info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionResumenhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/16689enginfo:eu-repo/semantics/altIdentifier/isbn/978-987-95849-7-2info:eu-repo/semantics/reference/hdl/10915/25738info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T16:34:31Zoai:sedici.unlp.edu.ar:10915/16689Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 16:34:31.611SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv First record of Harpagomyces (Eumycota, incertae sedis) in Cenozoic sediments, lower Colorado Basin, Argentina
title First record of Harpagomyces (Eumycota, incertae sedis) in Cenozoic sediments, lower Colorado Basin, Argentina
spellingShingle First record of Harpagomyces (Eumycota, incertae sedis) in Cenozoic sediments, lower Colorado Basin, Argentina
Fernández, Ana L.
Ciencias Naturales
Paleontología
Harpagomyces (Eumycota, incertae sedis)
Cenozoic sediments
Lower Colorado Basin, Argentina
title_short First record of Harpagomyces (Eumycota, incertae sedis) in Cenozoic sediments, lower Colorado Basin, Argentina
title_full First record of Harpagomyces (Eumycota, incertae sedis) in Cenozoic sediments, lower Colorado Basin, Argentina
title_fullStr First record of Harpagomyces (Eumycota, incertae sedis) in Cenozoic sediments, lower Colorado Basin, Argentina
title_full_unstemmed First record of Harpagomyces (Eumycota, incertae sedis) in Cenozoic sediments, lower Colorado Basin, Argentina
title_sort First record of Harpagomyces (Eumycota, incertae sedis) in Cenozoic sediments, lower Colorado Basin, Argentina
dc.creator.none.fl_str_mv Fernández, Ana L.
Grill, Silvia
Seifert, Keith
Bianchinotti, Virginia
Martínez, Gustavo Adolfo
author Fernández, Ana L.
author_facet Fernández, Ana L.
Grill, Silvia
Seifert, Keith
Bianchinotti, Virginia
Martínez, Gustavo Adolfo
author_role author
author2 Grill, Silvia
Seifert, Keith
Bianchinotti, Virginia
Martínez, Gustavo Adolfo
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Paleontología
Harpagomyces (Eumycota, incertae sedis)
Cenozoic sediments
Lower Colorado Basin, Argentina
topic Ciencias Naturales
Paleontología
Harpagomyces (Eumycota, incertae sedis)
Cenozoic sediments
Lower Colorado Basin, Argentina
dc.description.none.fl_txt_mv Harpagomyces Wilcz (Eumycota, incertae sedis) was registered in stratigraphic sections associated to archaeological sites in the Colorado Basin (Buenos Aires, Argentina). Since its description, no other record of this species appeared in literature, being the first appearance in the fossil record. Originally isolated from wastes, it was illustrated as having irregular structures with hook-like appendages that were described as conidia. We found simple and ramified filaments of thick-walled, pale brown, verrucose, cylindrical to somewhat doliform cells. Some cells bear one, two or rarely more lateral appendages, which were pale, thin-walled and smooth, taper to apex, and ended in two or three forked and pointed arms. The collected material agrees fairly well with Harpagomyces lomnickii Wilcz, recovered from late Pleistocene/Holocene La Salada and El Tigre archaeological sites. La Salada section is an outcrop where eolic sediments alternate with pedogenetic and lacustrine levels, the archaeological findings are restricted to the last 20cm section from the surface. In this sequence, Harpagomyces was recorded in sediments dated as old as 3564 years BP (OCR) at 72.5cm depth from the top. There, the pollen association registered corresponds to halophytic steppe with influence of the ecotone and/or the Patagonian steppe. El Tigre section consists of an alternation of eolic and fluvial facies associated with terraced levels and flood plains, involving the last 3000 cal. AP (OCR). Harpagomyces was registered in 12 palynological samples (181-1627 years BP, OCR) between 1.25cm and 2.05cm from the surface. The pollen association registered in this interval corresponds to halophytic steppe.
Simposio VI: Microfósiles del Mesozoico y Cenozoico de América del Sur y Antártida. Nuevas aplicaciones y problemáticas asociadas
Facultad de Ciencias Naturales y Museo
description Harpagomyces Wilcz (Eumycota, incertae sedis) was registered in stratigraphic sections associated to archaeological sites in the Colorado Basin (Buenos Aires, Argentina). Since its description, no other record of this species appeared in literature, being the first appearance in the fossil record. Originally isolated from wastes, it was illustrated as having irregular structures with hook-like appendages that were described as conidia. We found simple and ramified filaments of thick-walled, pale brown, verrucose, cylindrical to somewhat doliform cells. Some cells bear one, two or rarely more lateral appendages, which were pale, thin-walled and smooth, taper to apex, and ended in two or three forked and pointed arms. The collected material agrees fairly well with Harpagomyces lomnickii Wilcz, recovered from late Pleistocene/Holocene La Salada and El Tigre archaeological sites. La Salada section is an outcrop where eolic sediments alternate with pedogenetic and lacustrine levels, the archaeological findings are restricted to the last 20cm section from the surface. In this sequence, Harpagomyces was recorded in sediments dated as old as 3564 years BP (OCR) at 72.5cm depth from the top. There, the pollen association registered corresponds to halophytic steppe with influence of the ecotone and/or the Patagonian steppe. El Tigre section consists of an alternation of eolic and fluvial facies associated with terraced levels and flood plains, involving the last 3000 cal. AP (OCR). Harpagomyces was registered in 12 palynological samples (181-1627 years BP, OCR) between 1.25cm and 2.05cm from the surface. The pollen association registered in this interval corresponds to halophytic steppe.
publishDate 2010
dc.date.none.fl_str_mv 2010
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