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Title
Eurypterids Swimming In A Pack #48960483
Description
An illustration of eurypterids, also known as sea scorpions, traveling together in search of prey. Eurypterids are related to arachnids and include the largest known arthropods to have ever lived. They were formidable predators that thrived in warm shallow water, in both seas and lakes, from the mid Ordovician to late Permian (460 to 248 million years ago).