Tango01  | 15 May 2024 5:12 p.m. PST |
"Over 300 million years ago, before the age of giant dinosaurs, Earth was covered with giant insects. Imagine a world where dragonflies are the size of crows and millipedes are as long as cars. Welcome to the Carboniferous Period. Why were insects so enormous during this time? What did oxygen have to do with it? And why did these insects go extinct?
The Carboniferous Period was one of the most transformational periods in the history of Earth. The planet's landmasses were beginning to form the supercontinent of Pangea. Extensive swamps and warm, humid forests dominated the landscape. And giant insects weren't the only huge creatures roaming the planet. There was also a vast array of marine life, like early forms of sharks and a giant amphibian that would reach up to 6 feet long…"
Main page
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Armand
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| Perris0707 | 15 May 2024 5:27 p.m. PST |
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 etotheipi  | 15 May 2024 6:08 p.m. PST |
What was Earth Like in the Age of Giant Insects? I used to live in that apartment … |
| Glengarry5 | 15 May 2024 6:42 p.m. PST |
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| Michael May | 15 May 2024 10:17 p.m. PST |
If you find a cockroach that can pull a locomotive…hitch him up! |
| Wackmole9 | 16 May 2024 7:14 a.m. PST |
more dangerous due to the high O2 level and lighting setting the air on fire. |
| Tango01 | 16 May 2024 3:27 p.m. PST |
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| TheBeast | 16 May 2024 3:47 p.m. PST |
Bill, at surface pressure, I think the 35 percent would be deadly to humans over time. Least, read that somewhere. Doug |
| rvandusen | 18 May 2024 1:54 a.m. PST |
Prehistoric earth was a truly alien planet. |
| Tango01 | 18 May 2024 4:01 p.m. PST |
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| Mark J Wilson | 19 May 2024 2:45 a.m. PST |
@Whackmole9, only if the total air pressure is the same as today and I think it was a lot lower [0.20-0.25 bar], oxygen toxicity occurs at a partial pressure of 0.3 bar so 35% needs a total air pressure more than 0.86 bar to be toxic. I'm not sure how the difference in pressure impacts the flammability though. |
| Tango01 | 04 Aug 2024 4:48 p.m. PST |
Gliding Reptiles Once Lived in England
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Armand
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| etotheipi | 05 Aug 2024 3:00 a.m. PST |
Gliding Reptiles Still Live in England
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| Tango01 | 05 Aug 2024 4:48 p.m. PST |
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| Tango01 | 06 Oct 2024 5:24 p.m. PST |
Unprecedented Biting Strength in Jurassic Lampreys Points to Flesh-Eating Past
"Fossilized lampreys from the Jurassic period have surprised a team of paleontologists by their size and well-preserved feeding structures, indicating the creepy fish were already predatory 160 million years ago…"
From here
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Armand |
