The Controversial Role of Oxygen in Animal Evolution & Diversification | GEO GIRL

Note: The “How Continental Configuration Affects O2” video that I mention at the end is currently members-only, but will be coming out soon for everyone, don’t worry 😉

Primary references:
Mills and Canfield, 2014:
Cole et al., 2020:
Sperling et al., 2022:
Supplementary references:
1. Cloud, 1976:
2. Knoll & Carroll, 1999:
3. Knoll, 1992: DOI: 10.1007/978-1-4899-2427-8_3
4. Berkner & Marshall, 1965:;2
6. Ravaux et al., 2013:
7. Sperling & Stockey, 2018:
8. Brocks et al., 2017: https://doi. org/10.1038/nature23457
9. Sperling et al., 2015:
10. Schmidtko et al., 2017:

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Bamboo toilet paper:
Bamboo paper towels:
Compostable tableware:
Compostable trash bags:
Bamboo cutlery + straw! :
Eco-Friendly Tote (great for grocery shopping!):
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Eco-friendly laundry detergent:

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Non-textbook books I recommend:
Oxygen by D. Canfield:
Brief history of Earth by A. Knoll:
Life on young planet by A. Knoll:
Some assembly required by N. Shubin:
Your inner fish by N. Shubin:
Oxygen by N. Lane:
Alien Oceans by K. Hand:
Life’s Engines:

Tools I use as a geologist/teacher/student:
Geology field notebook:
Geology rock hammer:
Geological compass:
Geological hand lens:
Carbon-neutral pencil bag:
Carbon-neutral backpack:

0:00 Video Outline
1:01 Oxygen Control Hypothesis
2:38 Original Evidence for OCH
3:25 Correlation is Not Causation
5:00 O2 Threshold Required for Animals?
7:11 Role of Temperature?
8:19 Role of Primary Production?
9:54 Role of Ca & P Availability?
10:49 Role of Animals?
12:55 O2 Still Main Factor?
14:39 O2 Threshold for Diversity but Not Evolution
18:00 Flipped Evidence for OCH
18:36 Possible Scenarios
19:52 Significance of This Research
20:51 References & Related Videos

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