What do melanosomes in fossils indicate?

• A. They can provide clues about coloration of extinct species
• B. They reveal metabolic rates
• C. They indicate age
• D. They show diet

Answer: (A)

Melanosomes are pigment-containing structures that determine color in skin, feathers, and other tissues. When these tiny features are preserved in fossils, their shapes and arrangements reflect the type of pigment present, which in turn maps to specific colors. By studying fossil melanosomes, scientists can infer what an extinct species may have looked like, including patterns and shades of coloration, camouflaging, and display signals. This information about color helps us understand behavior and ecology in ways that other fossil evidence doesn’t, while it doesn’t directly reveal metabolic rate, age, or diet. So, the presence of preserved melanosomes mainly indicates coloration of extinct species.