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possibly for protection against predators
The original fossil was found in the Late Cretaceous deposits of the Niobrara Formation of Western Kansas
museums and schools etc
Found in 1861
The unusually excellent preservation of the Green River fish fossils is usually attributed to a combination of two factors: 1) a cold period during the Eocene that would have caused dead fish to sink faster due to a less inflated swim bladder
Mesolimulus walchi, Horseshoe Crab, small (Replica) Oviraptor possibly for protection against predatorsComing from the famous 150 million year old Jurassic Solnhofen Lithographic Limestone deposits near Eichstatt, Germany, this is a fine replica example of the Horseshoe Crab Mesolimulus walchi. Xiphosura, the horseshoe crabs, are related to the extinct Eurypterids, and more distantly to spiders and scorpions. Their lineage traces back to the Cambrian, and extends to modern times as the genus Limulus. This fossil is of a similar genus known as