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A simplified correlation between vertebrate evolution and Paleozoic geomagnetism

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18 days ago
A simplified correlation between vertebrate evolution and Paleozoic geomagnetism https://t.co/3BpDBtaLQW https://t.co/KeH92EMqj5
109 days ago
A simplified correlation between vertebrate evolution and Paleozoic geomagnetism https://t.co/CLNDuPGp3z https://t.co/n8afC7TT1N
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Supplemental Information

Chart A: Phylogeny

Each genus is listed alphabetically and placed in a major clade, numbered one to eight, as shown by paleobiology.org (black font), Benton (brown font), Zhoa and Zhu (green font), and Sepkoski (blue font).

DOI: 10.7287/peerj.preprints.28002v3/supp-1

Chart B: Chronology

Chart B shows the chronology of our 2104 genera.

DOI: 10.7287/peerj.preprints.28002v3/supp-2

Chart C: Proportional dating

Proportional dating is a method to compensate when the end-date of a geomagnetic zone falls between the estimated date for when a fossil is deposited. For example, if the genus is dated between 410 and 390 million years ago, and the geomagnetic zone is dated at 400, then the genus would be 50% in one zone, and 50% in the next. Dating by paleobiology.org is in black font; by Benton is brown, by Zhoa and Zhu is green; and Sepkoski is in blue font.

DOI: 10.7287/peerj.preprints.28002v3/supp-3

Additional Information

Competing Interests

This author declares that I have no competing interests.

Author Contributions

John P Staub conceived and designed the experiments, performed the experiments, analyzed the data, prepared figures and/or tables, authored or reviewed drafts of the paper, and approved the final draft.

Data Deposition

The following information was supplied regarding data availability:

There is no raw data or code.

Funding

This author received no funding for this work.


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