Is this what you are looking for? This is representative of the common ancestor of the zebra, the hipparion, the sinohippus, and the donkey.
Was it this exact fossil? Probably not. Maybe his brother was the ancestor of all. Maybe his distant cousin. Maybe a distant member of the same species. Maybe a member of the same genus. Maybe a member of a closely related genus, but quite likely it was this genus, hyracotherium.
But at any rate, some creature closely related to this four-toed, fox sized, nut and leaf eater became the ancestor of all those different species and genera, including the modern horse.
That what you are looking for?
Maybe, maybe, maybe, maybe. What if’s and maybes. If pigs had wings they would fly. Maybe, they are awful fat.
I see nothing but conjecture and wishful thinking. From the same people that claim the fossil record is too sparse as their excuse for lack of common ancestors.
Now you show me one you claim maybe is, or maybe it’s cousin, or maybe this, or maybe that. Quite a lot of maybes to be stating definates.
How about I believe or have faith this is a horse ancestor?
And so what if it is? The most ancient dog has six toes of which are merely vestigial dew claws in wolves and all dogs.
If it is an ancestor of the horse, then it is the same species as horse today, they are merely subspecies of this horse.
But what else split off from it?
We are not debating that horse remained horse, regardless that it may not look the same, like poodle looks different than the wolf. We asked for common ancestors where this split in species, such as missing common ancestor A that led to both human and chimp. Or missing common ancestor that led to a split in forms.
Instead you show me for example a wolf, and claim look, it became dogs..... so you showed me a horse, that through breeding changed in variation, like the wolf through breeding became over 100 breeds. But IF it is an actual horse ancestor than you just showed me a horse, just like showing me a wolf, which I already know can vary widely in appearance, but I also know they are of the same species.......
Of course over the years we have been told lots of things led to horses.
Hyracotherium - Wikipedia
So they were wrong then, but correct now, right?