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dc.contributor.author
Noetinger, Maria Sol
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dc.contributor.author
Bippus, Alexander C.
dc.contributor.author
Tomescu, Alexander M. F.
dc.date.available
2022-10-24T14:02:51Z
dc.date.issued
2021-11
dc.identifier.citation
Noetinger, Maria Sol; Bippus, Alexander C.; Tomescu, Alexander M. F.; Palynology of a short sequence of the Lower Devonian Beartooth Butte Formation at Cottonwood Canyon (Wyoming): age, depositional environments and plant diversity; John Wiley & Sons Inc.; Papers in Palaeontology; 7; 4; 11-2021; 2183-2204
dc.identifier.issn
2056-2802
dc.identifier.uri
http://hdl.handle.net/11336/174540
dc.description.abstract
The Beartooth Butte Formation hosts the most extensive Early Devonian macroflora of western North America. The age of the flora at Cottonwood Canyon (Wyoming) has been constrained to the Lochkovian–Pragian interval, based on fish biostratigraphy and unpublished palynological data. We present a detailed palynological analysis of the plant-bearing layers at Cottonwood Canyon. The palynomorphs consist of 32 spore, five cryptospore, two prasinophycean algae and an acritarch species. The stratigraphic ranges of these palynomorphs indicate a late Lochkovian or Pragian age, confirming previous age assignments. Analysis of samples from three different depositional environments of the plant-bearing sequence (layers with in situ lycophyte populations, flood layers that buried those populations and an organic matter accumulation zone within a flood layer) demonstrate distinct palynofacies. Comparisons between palynomorph and plant macrofossil diversity reveal some discrepancies. Whereas zosterophylls and lycophytes, most diverse and abundant among the macrofossils, have only one known corresponding spore type (assignable to zosterophylls) in the palynomorph assemblage, the trimerophytes, rare in the macrofossil assemblage, are represented by three spore types. Some of these discrepancies reflect taphonomic differences between the macrofossils and palynomorphs, while others could be due to the fact that the parent plants of most palynomorph types in the Cottonwood Canyon assemblage are unknown. These observations emphasize the need for concerted efforts to bring together the knowledge of macro- and microfloras within Early Devonian localities. Nevertheless, given the palaeophytogeographic significance of the Beartooth Butte Formation flora, its palynofossil and macrofossil assemblages, taken together, provide new data relevant to future discussions of Early Devonian biogeography.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
John Wiley & Sons Inc.
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
DEVONIAN
dc.subject
LOCHKOVIAN
dc.subject
NORTH AMERICA
dc.subject
PALYNOFACIES
dc.subject
PRAGIAN
dc.subject
SPORES
dc.subject.classification
Paleontología
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Palynology of a short sequence of the Lower Devonian Beartooth Butte Formation at Cottonwood Canyon (Wyoming): age, depositional environments and plant diversity
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-09-13T11:01:05Z
dc.journal.volume
7
dc.journal.number
4
dc.journal.pagination
2183-2204
dc.journal.pais
Reino Unido
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dc.description.fil
Fil: Noetinger, Maria Sol. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
dc.description.fil
Fil: Bippus, Alexander C.. State University of Oregon; Estados Unidos
dc.description.fil
Fil: Tomescu, Alexander M. F.. Humboldt State University; Estados Unidos
dc.journal.title
Papers in Palaeontology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1002/spp2.1395
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/full/10.1002/spp2.1395
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