Palissya – absolutely incomprehensible or surprisingly interpretable: a new morphological model, affiliations and phylogenetic insights.
The morphology of the adaxial structures of cones belonging to Palissya Endlicher 1847 emend. nov. are reinterpreted based on exquisitely preserved permineralised material from the Lower Cretaceous of Queensland. Although the material was not found in situ, it likely derives from the Orallo Formatio...
Published in: | Acta Palaeobotanica |
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Language: | English |
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W. Szafer Institute of Botany, Polish Academy of Sciences
2019
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Online Access: | https://doi.org/10.2478/acpa-2019-0015 https://doaj.org/article/474e2fb02daf4d4585dcc1cab99568cc |
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ftdoajarticles:oai:doaj.org/article:474e2fb02daf4d4585dcc1cab99568cc 2023-05-15T13:43:06+02:00 Palissya – absolutely incomprehensible or surprisingly interpretable: a new morphological model, affiliations and phylogenetic insights. GARY A. PATTEMORE ANDREW C. ROZEFELDS 2019-12-01T00:00:00Z https://doi.org/10.2478/acpa-2019-0015 https://doaj.org/article/474e2fb02daf4d4585dcc1cab99568cc EN eng W. Szafer Institute of Botany, Polish Academy of Sciences https://acpa.botany.pl/Palissya-absolutely-incomprehensible-or-surprisingly-interpretable-a-new-morphological,118455,0,2.html https://doaj.org/toc/2082-0259 2082-0259 doi:10.2478/acpa-2019-0015 https://doaj.org/article/474e2fb02daf4d4585dcc1cab99568cc Acta Palaeobotanica, Vol 59, Iss 2, Pp 181-214 (2019) palissya knezourocarpon lower cretaceous valanginian orallo formation surat basin queensland Paleontology QE701-760 Botany QK1-989 article 2019 ftdoajarticles https://doi.org/10.2478/acpa-2019-0015 2022-12-30T22:27:55Z The morphology of the adaxial structures of cones belonging to Palissya Endlicher 1847 emend. nov. are reinterpreted based on exquisitely preserved permineralised material from the Lower Cretaceous of Queensland. Although the material was not found in situ, it likely derives from the Orallo Formation, which is Valanginian in age. The cones have dual vascular bundles in each bract/scale complex, and the different tissue types in the bract and ovule/scale complex support interpretation of the cone as a compound structure. Since the early twentieth century it has been widely accepted that each ovule is surrounded by a cup-shaped structure, but the detailed morphology of the “cup” has hitherto been unclear. These new three-dimensionally preserved specimens with in situ ovules are described as Palissya tillackiorum sp. nov. This study demonstrates that the “cup” is formed from a pair of thin scales that subtend but are not fused to each ovule; each pair of scales comprises a thicker outer and thinner inner scale. The organographic relationships among ovules and scales in Palissya show a high degree of synorganisation. The adaxial surface of the bract/scale complex has 2–6 pairs of erect (orthotropous) ovules. The ovule/scale units are arranged symmetrically in two parallel rows on either side of the midline of the bract/scale. Individual ovule/scale units are comparable to those seen in extant Podocarpaceae and Taxaceae. The ovules are thin-walled and are interpreted to have a single integument and a non-thickened (non-lignified) micropyle. These new insights allow reinterpretation of material previously referred to Palissya. A new species is described from Yorkshire, England, as P. harrisii C.R. Hill ex Pattemore & Rozefelds sp. nov. All species based on well preserved cones are reconsidered herein: P. sphenolepis (Braun 1843) Nathorst 1908 emend. Florin 1958, P. elegans Parris, Drinnan & Cantrill 1995 emend. nov., P. bartrumii Edwards 1934 emend. nov., P. antarctica Cantrill 2000 and P. hunanensis Wang ... Article in Journal/Newspaper Antarc* Antarctica Directory of Open Access Journals: DOAJ Articles Parris ENVELOPE(9.789,9.789,62.915,62.915) Queensland The Cones ENVELOPE(78.344,78.344,-68.635,-68.635) Acta Palaeobotanica 59 2 181 214 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
palissya knezourocarpon lower cretaceous valanginian orallo formation surat basin queensland Paleontology QE701-760 Botany QK1-989 |
spellingShingle |
palissya knezourocarpon lower cretaceous valanginian orallo formation surat basin queensland Paleontology QE701-760 Botany QK1-989 GARY A. PATTEMORE ANDREW C. ROZEFELDS Palissya – absolutely incomprehensible or surprisingly interpretable: a new morphological model, affiliations and phylogenetic insights. |
topic_facet |
palissya knezourocarpon lower cretaceous valanginian orallo formation surat basin queensland Paleontology QE701-760 Botany QK1-989 |
description |
The morphology of the adaxial structures of cones belonging to Palissya Endlicher 1847 emend. nov. are reinterpreted based on exquisitely preserved permineralised material from the Lower Cretaceous of Queensland. Although the material was not found in situ, it likely derives from the Orallo Formation, which is Valanginian in age. The cones have dual vascular bundles in each bract/scale complex, and the different tissue types in the bract and ovule/scale complex support interpretation of the cone as a compound structure. Since the early twentieth century it has been widely accepted that each ovule is surrounded by a cup-shaped structure, but the detailed morphology of the “cup” has hitherto been unclear. These new three-dimensionally preserved specimens with in situ ovules are described as Palissya tillackiorum sp. nov. This study demonstrates that the “cup” is formed from a pair of thin scales that subtend but are not fused to each ovule; each pair of scales comprises a thicker outer and thinner inner scale. The organographic relationships among ovules and scales in Palissya show a high degree of synorganisation. The adaxial surface of the bract/scale complex has 2–6 pairs of erect (orthotropous) ovules. The ovule/scale units are arranged symmetrically in two parallel rows on either side of the midline of the bract/scale. Individual ovule/scale units are comparable to those seen in extant Podocarpaceae and Taxaceae. The ovules are thin-walled and are interpreted to have a single integument and a non-thickened (non-lignified) micropyle. These new insights allow reinterpretation of material previously referred to Palissya. A new species is described from Yorkshire, England, as P. harrisii C.R. Hill ex Pattemore & Rozefelds sp. nov. All species based on well preserved cones are reconsidered herein: P. sphenolepis (Braun 1843) Nathorst 1908 emend. Florin 1958, P. elegans Parris, Drinnan & Cantrill 1995 emend. nov., P. bartrumii Edwards 1934 emend. nov., P. antarctica Cantrill 2000 and P. hunanensis Wang ... |
format |
Article in Journal/Newspaper |
author |
GARY A. PATTEMORE ANDREW C. ROZEFELDS |
author_facet |
GARY A. PATTEMORE ANDREW C. ROZEFELDS |
author_sort |
GARY A. PATTEMORE |
title |
Palissya – absolutely incomprehensible or surprisingly interpretable: a new morphological model, affiliations and phylogenetic insights. |
title_short |
Palissya – absolutely incomprehensible or surprisingly interpretable: a new morphological model, affiliations and phylogenetic insights. |
title_full |
Palissya – absolutely incomprehensible or surprisingly interpretable: a new morphological model, affiliations and phylogenetic insights. |
title_fullStr |
Palissya – absolutely incomprehensible or surprisingly interpretable: a new morphological model, affiliations and phylogenetic insights. |
title_full_unstemmed |
Palissya – absolutely incomprehensible or surprisingly interpretable: a new morphological model, affiliations and phylogenetic insights. |
title_sort |
palissya – absolutely incomprehensible or surprisingly interpretable: a new morphological model, affiliations and phylogenetic insights. |
publisher |
W. Szafer Institute of Botany, Polish Academy of Sciences |
publishDate |
2019 |
url |
https://doi.org/10.2478/acpa-2019-0015 https://doaj.org/article/474e2fb02daf4d4585dcc1cab99568cc |
long_lat |
ENVELOPE(9.789,9.789,62.915,62.915) ENVELOPE(78.344,78.344,-68.635,-68.635) |
geographic |
Parris Queensland The Cones |
geographic_facet |
Parris Queensland The Cones |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Acta Palaeobotanica, Vol 59, Iss 2, Pp 181-214 (2019) |
op_relation |
https://acpa.botany.pl/Palissya-absolutely-incomprehensible-or-surprisingly-interpretable-a-new-morphological,118455,0,2.html https://doaj.org/toc/2082-0259 2082-0259 doi:10.2478/acpa-2019-0015 https://doaj.org/article/474e2fb02daf4d4585dcc1cab99568cc |
op_doi |
https://doi.org/10.2478/acpa-2019-0015 |
container_title |
Acta Palaeobotanica |
container_volume |
59 |
container_issue |
2 |
container_start_page |
181 |
op_container_end_page |
214 |
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1766184266420453376 |