Peachella is an extinct genus of trilobites, fossil marine arthropods, with species of average size (about 3.5 centimetres or 1.4 inches long).

It lived during the Toyonian stage (Upper Olenellus-zone), 516 to 513 million years ago, in what is today the southwestern United States.

Like all other members of the superfamily Olenelloidea, the eye-ridges spring from the back of the frontal lobe (L4) of the central area of the cephalon, that is called glabella.

Peachella is an average sized biceratopsid trilobite, that exhibits the strongly effaced cephalic features that are typical for a clade within the subfamily Biceratopsinae.

Peachella is unique in having short, wide, strongly inflated genal spines, with broadly rounded tips.

The central area of the cephalon (or glabella) is elongated, reaching the anterior border, but its features are strongly effaced, almost showing no furrows.

In Emigrantia the genal spines are longer than the cephalon and attach halfway down its side (or lateral margin), instead of being short and bloated.