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The large size and spiny nature of this trilobite make it one of the more spectacular ones
Current evidence indicates that Neanderthals and early modern Homo sapiens alternately occupied the Near East during cold and warm periods
All of the organic matter becomes replaced by minerals
Hold this tooth in your hand and know the terror its prey must have felt some 5 million years ago
Rhamphorhynchus, pterosaur skull & wing #5 Deinonychus The large size and spinyRhamphorhynchus, meaning "beak snout", is a genus of long tailed pterosaurs from the Jurassic period. Less specialized than contemporary, short tailed pterodactyloid pterosaurs such as Pterodactylus, it had a long tail, stiffened with ligaments, which ended in a characteristic diamond shaped vane. The jaws of Rhamphorhynchus housed needle like teeth, which were angled forward, with a curved, sharp, beak like tip lacking teeth, indicating a diet mainly
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