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dc.contributor.author
Bippus, Alexander C.
dc.contributor.author
Escapa, Ignacio Hernán
dc.contributor.author
Tomescu, Alexandru M. F.
dc.date.available
2020-03-05T19:34:58Z
dc.date.issued
2018-08
dc.identifier.citation
Bippus, Alexander C.; Escapa, Ignacio Hernán; Tomescu, Alexandru M. F.; Wanted dead or alive (probably dead): Stem group Polytrichaceae; Botanical Society of America; American Journal of Botany; 105; 8; 8-2018; 1243-1263
dc.identifier.issn
0002-9122
dc.identifier.uri
http://hdl.handle.net/11336/98858
dc.description.abstract
Premise of the Study: The Polytrichaceae are a widespread and morphologically isolated moss lineage. Early attempts to characterize phylogenetic relationships within the family suggested that morphology is not phylogenetically informative. Two well-characterized fossils similar to basal and derived Polytrichaceae (Meantoinea alophosioides and Eopolytrichum antiquum, respectively), are known from Cretaceous rocks. To assess the phylogenetic positions of these fossils and compare hypotheses of relationships recovered using molecular vs. morphological methods, we conducted a comprehensive morphology-based phylogenetic study of Polytrichaceae. Methods: We evaluated the phylogenetic relationships of Polytrichaceae using a data set of 100 morphological characters (including 11 continuously varying traits codified as continuous characters) scored for 44 species of acrocarpous mosses and parsimony as the optimality criterion. Key Results: Continuous characters significantly increased the resolving power of the analyses. The overall ingroup topology was sensitive to rooting as determined by outgroup selection, with some analyses yielding results that were incongruent with those of molecular studies. Both fossils had stable phylogenetic relationships, irrespective of outgroup sampling. Conclusions: Our results suggest that morphology is useful in resolving phylogenetic relationships in the Polytrichaceae, if both discrete and continuous characters are used. However, our rooting experiments demonstrate that there is no superior way to root analyses and indicate that relationships within the family are best evaluated using unrooted networks without outgroup taxa. These rooting problems suggest that additional information is needed to understand the phylogenetic relationships of Polytrichaceae. Such additional information could come from fossils of stem group polytrichaceous mosses, which await discovery.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Botanical Society of America
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
BRYOPHYTA
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CONTINUOUS CHARACTERS
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FOSSIL
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MORPHOLOGY
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MOSS
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OUTGROUP
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PHYLOGENY
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POLYTRICHACEAE
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STEM GROUP
dc.subject.classification
Paleontología
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Wanted dead or alive (probably dead): Stem group Polytrichaceae
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-03-04T15:42:36Z
dc.journal.volume
105
dc.journal.number
8
dc.journal.pagination
1243-1263
dc.journal.pais
Estados Unidos
dc.journal.ciudad
St. Louis
dc.description.fil
Fil: Bippus, Alexander C.. Humboldt State University; Estados Unidos
dc.description.fil
Fil: Escapa, Ignacio Hernán. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
dc.description.fil
Fil: Tomescu, Alexandru M. F.. Humboldt State University; Estados Unidos
dc.journal.title
American Journal of Botany
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/ajb2.1096
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://bsapubs.onlinelibrary.wiley.com/doi/full/10.1002/ajb2.1096
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