Looks like a hoof knife, bet ya could take the blade from one of those and put a antler handle on it and have the same thing.
In some cases a hoof knife will answer well for a crooked knife.
There is no standardized pattern of crooked knife. there are some tendencies to similarity of shapes used for similar cutting tasks, but that's as far as it goes. There are left handed, right handed, shallow curve and sharp curve blades in myriad styles, some will have hard angular bends, some soft. They will be found with top and bottom bevels as well. Some are dirt simple and some are works of art. Again, no standard shapes or styles.
Handles can be made from any hard material including wood, plastic, antler, ivory and bone. I've seen handles fastened with everything from rawhide, nylon tie wraps, fishing line, epoxy, friction tape, copper and steel wire, rivets and grocery string, just to name a few. A good friend has a dozen or so crooked knives he made for his own use, he prefers curved pieces of Spruce root for handles and fastens them with copper wire windings soldered in place. He also decorates the handles with his family fetishes, Raven and Turtle. By the way, he's full blood Haida.
The European "equivalent" of the crooked knife is the draw knife.
Three Hawks