Q: Are shrimp and cockroaches related? Which came first? A: Both are close relatives within the phylum Arthropoda (joint-legged animals) and are even closer within the group Pancrustaria—genetically, insects are more closely related to shrimp than to spiders! As for which came first? Cockroaches appeared around 350 million years ago; shrimp emerged about 200 million years ago. Dinosaurs only appeared around 230 million years ago—both shrimp and cockroaches are older than dinosaurs! 🦕
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