Before dinosaurs like the ones in Jurassic Park roamed the Earth, it was a wild place with some serious action going on. Picture a time over 500 million years ago, when life was mostly in the oceans, with weird creatures like trilobites and giant sea scorpions dominating the scene. On land, it was a bit more barren, but eventually, plants started popping up, leading to the rise of insects and amphibians. If you ever watch a documentary about this era, it feels like the Earth's early days were all about setting the stage for the dinosaur takeover. So yeah, long before T-rex ruled, the Earth was already busy getting ready for its biggest stars.

Credit:

CC BY 3.0 https://creativecommons.org/licenses/by/3.0:

bluegreen algae species: By Willem van Aken, CSIRO, https://commons.wikimedia.org/w/index.php?curid=35480947

Climatius BW: By Nobu Tamura, https://commons.wikimedia.org/w/index.php?curid=19461320

Cooksonia pertoni: By Smith609, https://commons.wikimedia.org/w/index.php?curid=4126300

Inostranc lati2DB: By Dmitry Bogdanov, https://commons.wikimedia.org/w/index.php?curid=4188086

CC BY 2.0 https://creativecommons.org/licenses/by/2.0:

Pacific lamprey digging: By USFWS - Pacific Region, https://commons.wikimedia.org/wiki/File:Pacific_lamprey_digging_a_nest.webm

Homotelus bromidensis: By James St. John - https://flic.kr/p/pbRKJQ, https://commons.wikimedia.org/w/index.php?curid=40021522

CC BY-SA 3.0 https://creativecommons.org/licenses/by-sa/3.0/:

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