I think they form only due to consistent cold exposure. Never in warm water or warm air, not due to fluidic pressure.

Consider neanderthal with long hair and exposed pinnae, hands cover ears to warm at times but must hear (Homo: the conversational ape) so auricle is always exposed to cold, so ear bones thicken. (Do tree shrews away from tropics develop exotoses? I
expect so.)

Summer swimming/surfing, winter air freezing. Combination of both?

Women more likely to avoid extended cold due to children.

I picture mothers walking with babies/ toddlers piggyback riding on their shoulders holding their mom's scalp hair (pigtail, braid) with their legs gently but snuggly wrapped around their ears. (And in summer swims, holding on to her hair, per Elaine.)

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

Op vrijdag 15 juli 2022 om 12:00:55 UTC+2 schreef DD'eDeN aka note/nickname/alas_my_loves:

I think

:-DDD

Who is interested in what *you* think??

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

On Friday, July 15, 2022 at 6:57:10 AM UTC-4, [email protected] wrote:

Op vrijdag 15 juli 2022 om 12:00:55 UTC+2 schreef DD'eDeN aka note/nickname/alas_my_loves:

I think

:-DDD

Who is interested in what *you* think??

We know *your* interests: "flamingos are wading mammals" ... "sirenian rib bones are fragile" ... "gibbon ancestors were aquarboreal" ... (the nonsense never ends)

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)