from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Plural form of eumelanosome.


Sorry, no etymologies found.


  • Examples of both eumelanosomes and phaeomelanosomes have been identified, and they are often preserved in life position within the structure of partially degraded feathers and filaments.

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  • Called eumelanosomes and phaeomelanosomes, they carry pigments that give black and grey, and shades of brown ranging from light beige to ginger.


  • The phaemelanosomes are rod-like and produce phaeomelanin, a reddish-brown or yellow pigment, while the eumelanosomes are more spherical in shape and produce black-grey eumelanin.

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  • Called eumelanosomes and phaeomelanosomes, they carried pigments that gave black and grey tones, as well as shades of brown ranging from light beige to ginger. | Top Stories

  • In some cases, the fossil feathers are clearly striped by bands of pigment and the alleged eumelanosomes only turn up in the dark ones, just as you'd expect.

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  • They're arranged in the same pattern - the eumelanosomes, in particular, are "densely packed and strongly aligned".

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  • They identified the fossilized feather inclusions as melanosomes based upon morphology and size: elongated eumelanosomes contain grey or black pigments while round phaeomelanosomes contained rufous (chestnut) coloring.

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  • In modern-day creatures, these pigment-bearing structures come in two forms: the cigar-shaped eumelanosomes that hold black melanin, and the egg-shaped or near-spherical phaeomelanosomes that contain pigments ranging from reddish brown through yellow.

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