A more southerly occurrence of Xenoxylon in North America: X. utahense Xie et Gee sp. nov. from the Upper Jurassic Morrison Formation in Utah, USA, and its paleobiogeographic and paleoclimatic significance
Although Xenoxylon is a global genus of Mesozoic wood in the Northern Hemisphere, it is striking that the valid records in North America occur only in the northernmost parts of the continent. Decades ago, two species of Xenoxylon were described from the Upper Jurassic Morrison Formation in Utah, USA...
Published in: | Review of Palaeobotany and Palynology |
---|---|
Main Authors: | , , , , |
Format: | Report |
Language: | English |
Published: |
ELSEVIER
2021
|
Subjects: | |
Online Access: | http://ir.nigpas.ac.cn/handle/332004/38357 http://ir.nigpas.ac.cn/handle/332004/38358 https://doi.org/10.1016/j.revpalbo.2021.104451 |
id |
ftchinacscnigpas:oai:ir.nigpas.ac.cn:332004/38358 |
---|---|
record_format |
openpolar |
spelling |
ftchinacscnigpas:oai:ir.nigpas.ac.cn:332004/38358 2023-05-15T13:15:21+02:00 A more southerly occurrence of Xenoxylon in North America: X. utahense Xie et Gee sp. nov. from the Upper Jurassic Morrison Formation in Utah, USA, and its paleobiogeographic and paleoclimatic significance Xie, Aowei Gee, Carole T. Bennis, Mary Beth Gray, Dale Sprinkel, Douglas A. 2021-08-01 http://ir.nigpas.ac.cn/handle/332004/38357 http://ir.nigpas.ac.cn/handle/332004/38358 https://doi.org/10.1016/j.revpalbo.2021.104451 英语 eng ELSEVIER REVIEW OF PALAEOBOTANY AND PALYNOLOGY http://ir.nigpas.ac.cn/handle/332004/38357 http://ir.nigpas.ac.cn/handle/332004/38358 doi:10.1016/j.revpalbo.2021.104451 Growth ring analysis Mean sensitivity Miroviaceae Salt Wash Member Xenoxylean WOOD GENUS XENOXYLON GROWTH-RINGS ALEXANDER ISLAND 1ST OCCURRENCE CLIMATE TERRESTRIAL FOREST RECONSTRUCTION PALEOECOLOGY SLOPE Plant Sciences Paleontology 期刊论文 2021 ftchinacscnigpas https://doi.org/10.1016/j.revpalbo.2021.104451 2021-10-15T00:07:48Z Although Xenoxylon is a global genus of Mesozoic wood in the Northern Hemisphere, it is striking that the valid records in North America occur only in the northernmost parts of the continent. Decades ago, two species of Xenoxylon were described from the Upper Jurassic Morrison Formation in Utah, USA. However, a recent review of all North American reports of Xenoxylon excluded both species from the genus based on their anatomy, rendering all records of this genus south of Montana invalid in 2019. Here we describe a fossil log from the Morrison Formation near Vernal, northeastern Utah, USA, with true Xenoxylon anatomy with locally xenoxylean radial tracheid pitting and fenestriform crossfield pitting. Due to a novel combination of radial tracheid pitting, crossfield pitting and ray height, a newspecies, Xenoxylon utahense Xie et Gee sp. nov., is recognized here. Located at the southernmost occurrence of Xenoxylon in North America during the Mesozoic, this new species confirms that Xenoxylon trees were not only restricted to a circumpolar zone, but also grew in more southerly areas. In comparison with other fossil plants in the Morrison Formation of Utah, along with growth ring characteristics and climatic preferences of living conifers, the new fossil log with true growth rings with abundant, well-formed earlywood and extremely little latewood argues for a warm and humid climate with very mild seasonality for the Late Jurassic in this region, which is inconsistent with previous interpretations of Xenoxylon as a reliable indicator of cool climates. (C) 2021 Elsevier B.V. All rights reserved. Report Alexander Island Nanjing Institute of Geology and Palaeontology: NIGPAS OpenIR (Chinese Academy of Sciences) Alexander Island ENVELOPE(-69.895,-69.895,-71.287,-71.287) Morrison ENVELOPE(-63.533,-63.533,-66.167,-66.167) Review of Palaeobotany and Palynology 291 104451 |
institution |
Open Polar |
collection |
Nanjing Institute of Geology and Palaeontology: NIGPAS OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacscnigpas |
language |
English |
topic |
Growth ring analysis Mean sensitivity Miroviaceae Salt Wash Member Xenoxylean WOOD GENUS XENOXYLON GROWTH-RINGS ALEXANDER ISLAND 1ST OCCURRENCE CLIMATE TERRESTRIAL FOREST RECONSTRUCTION PALEOECOLOGY SLOPE Plant Sciences Paleontology |
spellingShingle |
Growth ring analysis Mean sensitivity Miroviaceae Salt Wash Member Xenoxylean WOOD GENUS XENOXYLON GROWTH-RINGS ALEXANDER ISLAND 1ST OCCURRENCE CLIMATE TERRESTRIAL FOREST RECONSTRUCTION PALEOECOLOGY SLOPE Plant Sciences Paleontology Xie, Aowei Gee, Carole T. Bennis, Mary Beth Gray, Dale Sprinkel, Douglas A. A more southerly occurrence of Xenoxylon in North America: X. utahense Xie et Gee sp. nov. from the Upper Jurassic Morrison Formation in Utah, USA, and its paleobiogeographic and paleoclimatic significance |
topic_facet |
Growth ring analysis Mean sensitivity Miroviaceae Salt Wash Member Xenoxylean WOOD GENUS XENOXYLON GROWTH-RINGS ALEXANDER ISLAND 1ST OCCURRENCE CLIMATE TERRESTRIAL FOREST RECONSTRUCTION PALEOECOLOGY SLOPE Plant Sciences Paleontology |
description |
Although Xenoxylon is a global genus of Mesozoic wood in the Northern Hemisphere, it is striking that the valid records in North America occur only in the northernmost parts of the continent. Decades ago, two species of Xenoxylon were described from the Upper Jurassic Morrison Formation in Utah, USA. However, a recent review of all North American reports of Xenoxylon excluded both species from the genus based on their anatomy, rendering all records of this genus south of Montana invalid in 2019. Here we describe a fossil log from the Morrison Formation near Vernal, northeastern Utah, USA, with true Xenoxylon anatomy with locally xenoxylean radial tracheid pitting and fenestriform crossfield pitting. Due to a novel combination of radial tracheid pitting, crossfield pitting and ray height, a newspecies, Xenoxylon utahense Xie et Gee sp. nov., is recognized here. Located at the southernmost occurrence of Xenoxylon in North America during the Mesozoic, this new species confirms that Xenoxylon trees were not only restricted to a circumpolar zone, but also grew in more southerly areas. In comparison with other fossil plants in the Morrison Formation of Utah, along with growth ring characteristics and climatic preferences of living conifers, the new fossil log with true growth rings with abundant, well-formed earlywood and extremely little latewood argues for a warm and humid climate with very mild seasonality for the Late Jurassic in this region, which is inconsistent with previous interpretations of Xenoxylon as a reliable indicator of cool climates. (C) 2021 Elsevier B.V. All rights reserved. |
format |
Report |
author |
Xie, Aowei Gee, Carole T. Bennis, Mary Beth Gray, Dale Sprinkel, Douglas A. |
author_facet |
Xie, Aowei Gee, Carole T. Bennis, Mary Beth Gray, Dale Sprinkel, Douglas A. |
author_sort |
Xie, Aowei |
title |
A more southerly occurrence of Xenoxylon in North America: X. utahense Xie et Gee sp. nov. from the Upper Jurassic Morrison Formation in Utah, USA, and its paleobiogeographic and paleoclimatic significance |
title_short |
A more southerly occurrence of Xenoxylon in North America: X. utahense Xie et Gee sp. nov. from the Upper Jurassic Morrison Formation in Utah, USA, and its paleobiogeographic and paleoclimatic significance |
title_full |
A more southerly occurrence of Xenoxylon in North America: X. utahense Xie et Gee sp. nov. from the Upper Jurassic Morrison Formation in Utah, USA, and its paleobiogeographic and paleoclimatic significance |
title_fullStr |
A more southerly occurrence of Xenoxylon in North America: X. utahense Xie et Gee sp. nov. from the Upper Jurassic Morrison Formation in Utah, USA, and its paleobiogeographic and paleoclimatic significance |
title_full_unstemmed |
A more southerly occurrence of Xenoxylon in North America: X. utahense Xie et Gee sp. nov. from the Upper Jurassic Morrison Formation in Utah, USA, and its paleobiogeographic and paleoclimatic significance |
title_sort |
more southerly occurrence of xenoxylon in north america: x. utahense xie et gee sp. nov. from the upper jurassic morrison formation in utah, usa, and its paleobiogeographic and paleoclimatic significance |
publisher |
ELSEVIER |
publishDate |
2021 |
url |
http://ir.nigpas.ac.cn/handle/332004/38357 http://ir.nigpas.ac.cn/handle/332004/38358 https://doi.org/10.1016/j.revpalbo.2021.104451 |
long_lat |
ENVELOPE(-69.895,-69.895,-71.287,-71.287) ENVELOPE(-63.533,-63.533,-66.167,-66.167) |
geographic |
Alexander Island Morrison |
geographic_facet |
Alexander Island Morrison |
genre |
Alexander Island |
genre_facet |
Alexander Island |
op_relation |
REVIEW OF PALAEOBOTANY AND PALYNOLOGY http://ir.nigpas.ac.cn/handle/332004/38357 http://ir.nigpas.ac.cn/handle/332004/38358 doi:10.1016/j.revpalbo.2021.104451 |
op_doi |
https://doi.org/10.1016/j.revpalbo.2021.104451 |
container_title |
Review of Palaeobotany and Palynology |
container_volume |
291 |
container_start_page |
104451 |
_version_ |
1766268144761962496 |