Is it plausible for a being to possess a singular halo-shaped 'horn', while other members of the species possess two 'regular horns'?

I am currently working a humanoid roughly deer-like species in a sci-fi roleplay setting, and one of the developments I have had with such species has me stuck trying to explain it in a way that makes somewhat of sense. Furthermore, I apologize if this question breaks any rules, I am still rather new to the site.

These guys are known as the Vruk'yeol or 'Cervidani' as many oddly call them. They walk on roughly digitigrade legs with weak hoof-structures being overtaken by a proper foot. One interesting element of this species to note are their various shapes of horns, growing from out behind of their head plates. These horns are often noted to grow into a strange circular halo shape, with various forms of regular double horns taking the place of common appearance over them.

This isn't my art nor work, but serves as a reference. Artist's page here

Is there any reason or way for this species to possess either option of horns among its living members? One theory I have developed is that during early development of the horns, they could all grow as halos as such, but at a certain point they could 'break' naturally, forming two regular horns that would follow the regular path of horn development for this race. For some of them the breaking doesn't occur, leaving the horns to remain as a singular halo. Is this a sound assumption?

posted over 5 years ago

McGerridae‭

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