TED-ED: How do we know what color dinosaurs were? - Len Bloch

The video explores the Microraptor, a small carnivorous dinosaur, and how its iridescent black coloration was determined through fossil analysis. By examining melanosomes in fossilized feathers, scientists can infer the colors of ancient creatures. The video explains the physics of light and color, particularly how melanosomes in bird feathers create diverse colors. This research suggests many dinosaurs, including the Velociraptor, likely had feathers, challenging traditional depictions in media.

What is the primary method used to determine the coloration of the microraptor?

• Comparing with modern reptiles

• DNA sequencing

• Fossil analysis

• Artistic interpretation

What role do melanosomes play in bird feather coloration?

• They act as a simple dye

• They absorb all light wavelengths

• They are responsible for feather growth

• They form nanostructures that reflect light

How does the wavelength of light affect the color seen in bird feathers?

• Longer wavelengths produce blue colors

• Matching wavelengths reinforce specific colors

• Wavelengths do not affect color

• Shorter wavelengths produce red colors

What did scientists find when they examined the microraptor's feather imprints?

• Structures similar to modern bird feathers

• No significant structures

• Only bone imprints

• Evidence of scales

What conclusion did scientists reach about the microraptor's feather color?

• It was likely a bright red

• It was iridescent black

• It had no color

• It was similar to modern reptiles