https://en.wikipedia.org/wiki/Hyperoxia
This was a screenshot I took months ago while watching a Geology Hub upload on YT. It was a lightbulb moment for my understanding of mass extinction events, (the largest was 250ma). I’ve referenced this multiple times, so thought I might share. Perhaps you find it as interesting as I do.
Yep.
DragonGryphonflys that had around a foot / 30 cm wingspan, and underwater scorpions that were 18 feet / 6 meters long including the tail.Okay, yeah, thanks for that nightmare …
Well to be fair squid get much bigger than 6 metres
True. But for the most part, squid are also not chittering outside at night, banging on the windows trying to get in.