The Prochaetodermatidae are a family of small
worm
Worms are many different distantly related bilateral animals that typically have a long cylindrical tube-like body, no limbs, and no eyes (though not always).
Worms vary in size from microscopic to over in length for marine polychaete worm ...
-shaped (<1 cm)
chaetoderm molluscs. The burrowing organisms lack a true foot; they have a large pair of jaws and a small
radula
The radula (, ; plural radulae or radulas) is an anatomical structure used by molluscs for feeding, sometimes compared to a tongue. It is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food ...
, comprising a dozen rows of paired teeth. They are known from around the globe, except in
polar region
The polar regions, also called the frigid zones or polar zones, of Earth are the regions of the planet that surround its geographical poles (the North and South Poles), lying within the polar circles. These high latitudes are dominated by flo ...
s, and inhabit ocean depts of 50 m to the deepest depths trawled.
References
{{Taxonbar, from=Q3016562
Aplacophorans
Mollusc families