Eurypterida, Sea Scorpions, Extinct Arthropods, Museum Quality, Rubber, Hand Painted, Realistic Toy Figure, Model, Kids, 5 1/2 Inches. CH431 BB109

Eurypterida, Sea Scorpions, Extinct Arthropods, Museum Quality, Rubber, Hand Painted, Realistic Toy Figure, Diorama Model, Kids, Educational,  5 1/2 Inches.  Eurypterids, often informally called sea scorpions, are a group of extinct arthropods that form the order Eurypterida. The earliest known eurypterids date to the Darriwilian stage of the Ordovician period 467.3 million years ago. The group is likely to have appeared first either during the Early Ordovician or Late Cambrian period. With approximately 250 species, the Eurypterida is the most diverse Paleozoic chelicerate order. Following their appearance during the Ordovician, eurypterids became major components of marine faunas during the Silurian, from which the majority of eurypterid species have been described. The Silurian genus Eurypterus accounts for more than 90% of all known eurypterid specimens. Though the group continued to diversify during the subsequent Devonian period, the eurypterids were heavily affected by the Late Devonian extinction event. They declined in numbers and diversity until becoming extinct during the Permian€“Triassic extinction event (or sometime shortly before) 251.9 million years ago. Although popularly called "sea scorpions", only the earliest eurypterids were marine; many later forms lived in brackish or fresh water, and they were not true scorpions. Some studies suggest that a dual respiratory system was present, which would have allowed for short periods of time in terrestrial environments. The name Eurypterida comes from the Ancient Greek words εὐρύς (eurús), meaning 'broad' or 'wide', and πτερόν (pterón), meaning 'wing', referring to the pair of wide swimming appendages present in many members of the group. Collectible Wildlife Gifts is the market leader in providing high quality, realistic toys of all types! Every one of our items is heavily inspected for quality craftsmanship and authenticity. Our products make great gifts for your family and friends! Additionally, our lifelike animal figurines and plush make for great displays and educational sets. We are happy to serve our wide range of clientele from parents to educators, gift shop owners and many more! Our team works hard to ensure you get a great toy. All products from CWG are checked for quality to ensure you receive the order in perfect condition. From plush sharks to educational animal growths cycle we offer the perfect toy or gift for any occasion. Our products have been ordered by educational groups, aquariums, zoos, and more. Great customer service is guaranteed when you order from Collectible Wildlife Gifts, we want you to love your toy and have a simple ordering process, we are happy to assist with inquiries!