All articles tagged with #melanosomes
A Montana fossil find shows juvenile Diplodocus skin preserved with melanosomes indicating a speckled, camouflaged appearance rather than a dull tone, suggesting color patterns helped avoid predators and offering new insights into dinosaur appearance and behavior.
Fossilized skin from a juvenile Diplodocus reveals two melanosome shapes in two skin layers, hinting at a speckled pattern with dark and light-reflective patches. While exact hues can’t be determined from preserved pigments, this marks the first physical evidence of color-producing structures in sauropod skin and suggests textured, camouflaged appearances for long-necked dinosaurs around 150 million years ago.
Scientists discovered hollow melanosomes in platypus fur—structures typically associated with color in birds—yet the fur remains dull because the hollow particles are scattered randomly, not organized to channel light. The hollow structures may aid insulation and buoyancy for a semi-aquatic lifestyle, and their presence raises questions about convergent evolution and how these pigment compartments form, with potential implications for human disease research where hollow melanosomes appear in melanoma.
A Biology Letters study discovers hollow melanosomes in the platypus’s hair—previously seen only in birds—challenging the link between melanosome shape and color in mammals. The platypus fur remains dull brown, echidnas lack hollow melanosomes, and researchers are exploring whether this trait relates to the aquatic lifestyle and broader mammalian evolution.
A Biology Letters study reveals platypus hair melanosomes are hollow and spherical—an arrangement previously observed only in birds—challenging assumptions about color in mammals and hinting at an evolutionary link to their aquatic past; echidnas do not share this feature.
New fossils from Cambrian myllokunmingids reveal pineal/parapineal organs with lens-like structures and melanosomes identical to retinal pigment epithelium, implying these ancient vertebrates had four camera-type eyes and supporting deep homology between eyes and the pineal complex.
Scientists have discovered preserved melanosomes in Diplodocus fossils, revealing that the dinosaur likely had a speckled, possibly iridescent appearance, challenging previous depictions of its dull coloration.