6 ms·

To me it seems a surprise that this has taken so long to be discovered in general. I thought we would know all muscles by now.

• Retric 5y ago
  It’s been known about for at least 25 years, but there was some debate about the specifics. Thus they “described this layer in detail for the first time.”
  • rbanffy 5y ago
    It spent a good couple million years literally under our noses.