Palmation

In these four antlers there is no trace of palmation, and apart from the elongated base there is nothing to distinguish them from the two-, three-, and four-tined stages of the antlers of other deer...

Source: wiktionary

Fallow deer of trophy quality must develop palmation; there are herds where palmations are rare or non-existent.

Source: wiktionary

If the axis of the brow palm is markedly curved, and also shows palmation at the tip, the width of the brow palm is taken at a right angle to the tip (figure 9-H).

Source: wiktionary

In the antlers of the moose, on the other hand, we find the following abnormality: the antlers may add extra points that reach down, below the palmations' edges.

Source: wiktionary