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The Cretaceous Diatom Database : A tool for investigating early diatom evolution

Bryłka, Karolina LU orcid ; Ashworth, Matt P. ; Alverson, Andrew J. LU and Conley, Daniel J. LU orcid (2024) In Journal of Phycology 60(5). p.1090-1104
Abstract

The Cretaceous period is the time of the first appearance of the diatoms in the fossil record. These fossils give us direct evidence of the age and early evolution of the diatom lineage. The fossil record, however, is incomplete and therefore often extrapolated through time-calibrated phylogenies. These two approaches offer different perspectives on the early evolution of diatoms, which is still poorly understood. We compiled the first comprehensive Cretaceous Diatom Database, a tool to investigate the taxonomy, diversity, and occurrence of the earliest known diatom lineages. To further aid the integration and use of the oldest diatom fossils in molecular clock analyses, we present a set of well-documented Cretaceous fossils that can be... (More)

The Cretaceous period is the time of the first appearance of the diatoms in the fossil record. These fossils give us direct evidence of the age and early evolution of the diatom lineage. The fossil record, however, is incomplete and therefore often extrapolated through time-calibrated phylogenies. These two approaches offer different perspectives on the early evolution of diatoms, which is still poorly understood. We compiled the first comprehensive Cretaceous Diatom Database, a tool to investigate the taxonomy, diversity, and occurrence of the earliest known diatom lineages. To further aid the integration and use of the oldest diatom fossils in molecular clock analyses, we present a set of well-documented Cretaceous fossils that can be placed onto molecular phylogenetic trees of extant and extinct species, making them ideal candidates for the calibration of molecular clocks. The analysis of the fossil record and the Cretaceous Diatom Database revealed Cretaceous diversity is substantially greater than previously thought, yet considerable taxonomic work is still needed. The Cretaceous Diatom Database and the list of Cretaceous fossils for calibrating molecular clocks represent valuable resources for future evolutionary and taxonomic studies of modern and fossil diatoms.

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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
calibration point, Cretaceous Diatom Database, diatoms, molecular clock
in
Journal of Phycology
volume
60
issue
5
pages
15 pages
publisher
Wiley-Blackwell
external identifiers
  • pmid:39215544
  • scopus:85202873533
ISSN
0022-3646
DOI
10.1111/jpy.13499
language
English
LU publication?
yes
id
a23c3b92-80f7-4650-b599-8a251b598c12
date added to LUP
2024-12-16 11:06:15
date last changed
2025-07-01 03:01:19
@article{a23c3b92-80f7-4650-b599-8a251b598c12,
  abstract     = {{<p>The Cretaceous period is the time of the first appearance of the diatoms in the fossil record. These fossils give us direct evidence of the age and early evolution of the diatom lineage. The fossil record, however, is incomplete and therefore often extrapolated through time-calibrated phylogenies. These two approaches offer different perspectives on the early evolution of diatoms, which is still poorly understood. We compiled the first comprehensive Cretaceous Diatom Database, a tool to investigate the taxonomy, diversity, and occurrence of the earliest known diatom lineages. To further aid the integration and use of the oldest diatom fossils in molecular clock analyses, we present a set of well-documented Cretaceous fossils that can be placed onto molecular phylogenetic trees of extant and extinct species, making them ideal candidates for the calibration of molecular clocks. The analysis of the fossil record and the Cretaceous Diatom Database revealed Cretaceous diversity is substantially greater than previously thought, yet considerable taxonomic work is still needed. The Cretaceous Diatom Database and the list of Cretaceous fossils for calibrating molecular clocks represent valuable resources for future evolutionary and taxonomic studies of modern and fossil diatoms.</p>}},
  author       = {{Bryłka, Karolina and Ashworth, Matt P. and Alverson, Andrew J. and Conley, Daniel J.}},
  issn         = {{0022-3646}},
  keywords     = {{calibration point; Cretaceous Diatom Database; diatoms; molecular clock}},
  language     = {{eng}},
  number       = {{5}},
  pages        = {{1090--1104}},
  publisher    = {{Wiley-Blackwell}},
  series       = {{Journal of Phycology}},
  title        = {{The Cretaceous Diatom Database : A tool for investigating early diatom evolution}},
  url          = {{http://dx.doi.org/10.1111/jpy.13499}},
  doi          = {{10.1111/jpy.13499}},
  volume       = {{60}},
  year         = {{2024}},
}