A second species of tricosta expands the diversity of the intriguing mesozoic tricostate mosses
Premise of research. Early Cretaceous (Valanginian) rocks exposed at Apple Bay (Vancouver Island, Canada) have yielded numerous anatomically preserved bryophytes that have expanded our knowledge of the pre-Cenozoic fossil record of this group. A new moss type with tricostate leaves from Apple Bay co...
| Autores: | , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2023 |
| País: | España |
| Institución: | Universidad Autónoma de Madrid |
| Repositorio: | Biblos-e Archivo. Repositorio Institucional de la UAM |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.uam.es:10486/715512 |
| Acceso en línea: | http://hdl.handle.net/10486/715512 https://dx.doi.org/10.1086/726016 |
| Access Level: | acceso abierto |
| Palabra clave: | bryophyte Cretaceous fossil Hypnanae permineralization Tricostaceae Biología y Biomedicina / Biología |
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A second species of tricosta expands the diversity of the intriguing mesozoic tricostate mossesBlanco Moreno, CandelaValois, MarcStockey, Ruth A.Rothwell, Gar W.Tomescu, Alexandru M.F.bryophyteCretaceousfossilHypnanaepermineralizationTricostaceaeBiología y Biomedicina / BiologíaPremise of research. Early Cretaceous (Valanginian) rocks exposed at Apple Bay (Vancouver Island, Canada) have yielded numerous anatomically preserved bryophytes that have expanded our knowledge of the pre-Cenozoic fossil record of this group. A new moss type with tricostate leaves from Apple Bay combines characters not encountered in moss species recorded previously, warranting in-depth characterization of a new taxon. Methodology. Carbonate concretions containing permineralized fossil material were sectioned using the cellulose acetate peel technique. The resulting acetate peels providing serial sections through the bryophyte specimens were used to reconstruct the habit of the plant and its leaves in two and three dimensions. Pivotal results. We describe a new species of moss in the family Tricostaceae, Tricosta priapiana sp. nov. The anatomy and morphology of the new species justify expanding and refining the diagnoses of Tricostaceae and Tricosta, especially with respect to perigonial branches and themorphology of branch buds. The presence of pseudoparaphyllia surrounding the branch buds supports the pleurocarpous affinities proposed previously for the Tricostaceae. Conclusions. Tricosta priapiana adds to the diversity of tricostate mosses, an extinct group that was intriguingly diverse in the Mesozoic. Nevertheless, the tricostate state is probably a convergent trait, or a trait that may have evolved independently in acrocarpous and pleurocarpous moss lineages in response to similar selective pressures. Still, it remains unclear what such selective pressures may have been, as the paleoclimates and habitats that hosted the tricostate mosses are not well circumscribed, precluding comparisons among the different species and their closest analogs among living multicostate mossesCandela Blanco-Moreno is supported by a Margarita Salas CA1/RSUE/2021-00703 scholarship from Universidad Autónoma de Madrid and the Ministry of Universities of Spain.The University of Chicago PressDepartamento de BiologíaFacultad de Ciencias20232023-08-21research articlehttp://purl.org/coar/resource_type/c_2df8fbb1VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/715512https://dx.doi.org/10.1086/726016reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial 4.0 Internationalhttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/7155122026-06-23T12:46:27Z |
| dc.title.none.fl_str_mv |
A second species of tricosta expands the diversity of the intriguing mesozoic tricostate mosses |
| title |
A second species of tricosta expands the diversity of the intriguing mesozoic tricostate mosses |
| spellingShingle |
A second species of tricosta expands the diversity of the intriguing mesozoic tricostate mosses Blanco Moreno, Candela bryophyte Cretaceous fossil Hypnanae permineralization Tricostaceae Biología y Biomedicina / Biología |
| title_short |
A second species of tricosta expands the diversity of the intriguing mesozoic tricostate mosses |
| title_full |
A second species of tricosta expands the diversity of the intriguing mesozoic tricostate mosses |
| title_fullStr |
A second species of tricosta expands the diversity of the intriguing mesozoic tricostate mosses |
| title_full_unstemmed |
A second species of tricosta expands the diversity of the intriguing mesozoic tricostate mosses |
| title_sort |
A second species of tricosta expands the diversity of the intriguing mesozoic tricostate mosses |
| dc.creator.none.fl_str_mv |
Blanco Moreno, Candela Valois, Marc Stockey, Ruth A. Rothwell, Gar W. Tomescu, Alexandru M.F. |
| author |
Blanco Moreno, Candela |
| author_facet |
Blanco Moreno, Candela Valois, Marc Stockey, Ruth A. Rothwell, Gar W. Tomescu, Alexandru M.F. |
| author_role |
author |
| author2 |
Valois, Marc Stockey, Ruth A. Rothwell, Gar W. Tomescu, Alexandru M.F. |
| author2_role |
author author author author |
| dc.contributor.none.fl_str_mv |
Departamento de Biología Facultad de Ciencias |
| dc.subject.none.fl_str_mv |
bryophyte Cretaceous fossil Hypnanae permineralization Tricostaceae Biología y Biomedicina / Biología |
| topic |
bryophyte Cretaceous fossil Hypnanae permineralization Tricostaceae Biología y Biomedicina / Biología |
| description |
Premise of research. Early Cretaceous (Valanginian) rocks exposed at Apple Bay (Vancouver Island, Canada) have yielded numerous anatomically preserved bryophytes that have expanded our knowledge of the pre-Cenozoic fossil record of this group. A new moss type with tricostate leaves from Apple Bay combines characters not encountered in moss species recorded previously, warranting in-depth characterization of a new taxon. Methodology. Carbonate concretions containing permineralized fossil material were sectioned using the cellulose acetate peel technique. The resulting acetate peels providing serial sections through the bryophyte specimens were used to reconstruct the habit of the plant and its leaves in two and three dimensions. Pivotal results. We describe a new species of moss in the family Tricostaceae, Tricosta priapiana sp. nov. The anatomy and morphology of the new species justify expanding and refining the diagnoses of Tricostaceae and Tricosta, especially with respect to perigonial branches and themorphology of branch buds. The presence of pseudoparaphyllia surrounding the branch buds supports the pleurocarpous affinities proposed previously for the Tricostaceae. Conclusions. Tricosta priapiana adds to the diversity of tricostate mosses, an extinct group that was intriguingly diverse in the Mesozoic. Nevertheless, the tricostate state is probably a convergent trait, or a trait that may have evolved independently in acrocarpous and pleurocarpous moss lineages in response to similar selective pressures. Still, it remains unclear what such selective pressures may have been, as the paleoclimates and habitats that hosted the tricostate mosses are not well circumscribed, precluding comparisons among the different species and their closest analogs among living multicostate mosses |
| publishDate |
2023 |
| dc.date.none.fl_str_mv |
2023 2023-08-21 |
| dc.type.none.fl_str_mv |
research article http://purl.org/coar/resource_type/c_2df8fbb1 VoR http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10486/715512 https://dx.doi.org/10.1086/726016 |
| url |
http://hdl.handle.net/10486/715512 https://dx.doi.org/10.1086/726016 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 Attribution-NonCommercial 4.0 International http://creativecommons.org/licenses/by-nc/4.0/ |
| dc.rights.openaire.fl_str_mv |
info:eu-repo/semantics/openAccess |
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open access http://purl.org/coar/access_right/c_abf2 Attribution-NonCommercial 4.0 International http://creativecommons.org/licenses/by-nc/4.0/ |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.publisher.none.fl_str_mv |
The University of Chicago Press |
| publisher.none.fl_str_mv |
The University of Chicago Press |
| dc.source.none.fl_str_mv |
reponame:Biblos-e Archivo. Repositorio Institucional de la UAM instname:Universidad Autónoma de Madrid |
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Universidad Autónoma de Madrid |
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Biblos-e Archivo. Repositorio Institucional de la UAM |
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Biblos-e Archivo. Repositorio Institucional de la UAM |
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