When a planarian flatworm loses its head, it simply grows another. The head, if left alone, can grow a body to match. In a ...

Scalidophoran worms diversified in the Cambrian Fortunian, as indicated by recent reports from this stage, with two described species and two more unnamed forms exclusively from Orsten-type ...

It is inevitable that every grazing horse will pick up different types of parasitic worms from their environment. Under normal conditions, the horse’s immune system keeps the worm burden in the gut ...