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11
votes
0answers
186 views

Do the majority of fish lack scales on their heads?

Based on pictures, it seems to me that a vast majority of fish species that have scales do NOT have scales on their heads. Is that fact true? To make this properly answerable: lets' define a ...
7
votes
2answers
460 views

Did human hairs actually evolve from scales?

What is the evolution of hairs? Did they evolve from scales?
4
votes
1answer
218 views

What did pangolin scales evolve from?

Were they developed anew or a heritage from fish?