They found a 3.5-million-year-old skull and partial jaw thought to belong to a new branch of the early human family.

Because it is only known from a partial jaw from a juvenile, little more than general information can be drawn from it at this point.

These were named from a fossilized skull and a partial lower jaw, respectively.

A partial lower jaw was once thought to belong as well, but was found to have come from a phytosaur.

The type specimen of Coloborhynchus is known only from a partial upper jaw.

They include at least one partial lower jaw with teeth, though there may well be further specimens.

The type specimen of C. clavirostris is a partial upper jaw.

This genus is known from teeth and possibly partial lower jaws.

Included in this material are over 120 more teeth from all parts of the jaw and four partial lower jaws with the teeth lost.

Only after careful analysis did the scientists conclude that the nearly complete skull and partial jaw represented a completely different genus and species.