the carboniferous is the best because there's terrestrial life but it's completely fucking bizarre. even the trees are fucked up.
any other time period - even one with dinosaurs - you'd be like "yeah ok this is earth, sure". carboniferous, you'd be like "oh SHIT what planet is this"
and yet i feel like i can hear and smell this weird geometric forest full of man-size centipedes and carnivorous mega-frogs. i can feel the sweat on my brow
most of the fungi and bacteria that now cause decomposition in forests hadn't yet evolved to tackle this exciting new "wood" stuff so it was a landscape of endless, century-deep drifts of undecaying fallen forests, endlessly layering themselves upwards