How pointy were Elrond's ears?

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Originally Posted by littlemanpoet

If Elrond was half-elven, were his ears half pointy? What about Elros? What about Elros's son, Vardamir Nolimon?

And where the heck did this pointy eared notion come from? Where is it in Tolkien?

This thread caught my attention, and so might as well add my two cents (or pence, or whatever ).

If one were to observe enough people, one would see that there are many different types of ear shapes. And I'm not just speaking about large or small; some are more open than others, etc. Could our elvish ancestors have had a more open large "leaf-like" type, while those of us with more human blood may have the smaller and closed curled-up type? And over time the intermingling and variations continued. To say 'ear' is like saying 'leaf' and accounting for all of the leaves on all of the trees that are now and have ever been.

The mind boggles.