Coloration Strategies Urban Ecology Flight Styles Sensory Systems Metabolism Alcohol Tolerance Complexity Mimicry Body Size Fur Coloration Species Digit Loss Ground-Dwelling Mammals High Latitude Adaptation Hermit Crabs Environmental Conditions Predatory Techniques Pterosaur Evolution Sensory Functions Behavioral Ecology Plant-Dinosaur Interactions Marine Life Survival Strategies Land Colonization Species Adaptation Genetic Mutations Body Size Evolution Camouflage Species Discovery Body Mass Species Development Venom Resistance Defensive Structures Eukaryotic Cells Reproductive Strategies Microbial Symbiosis Genetic Plasticity Energy Costs Parasitic Strategies Species Diversity Extreme Environments Birds Size Variation Natural Selection Neotropical Leaf-Nosed Bats
Cell-level preservation reveals keratinized spikes unlike any previously seen in dinosaurs.
