The most successful eurypterid by far was the Middle to Late Silurian "Eurypterus", a generalist, equally likely to have engaged in predation or scavenging. Thought to have hunted mainly small and soft-bodied invertebrates, such as worms, species of the genus (of which the most common is the type species, "E. remipes") account for more than 90% (perhaps as many as 95%) of all known fossil eurypterid specimens. Despite their vast number, "Eurypterus" are only known from a relatively short temporal range, first appearing during the Late Llandovery epoch (around 432 million years ago) and being extinct by the end of the Pridoli epoch. "Eurypterus" was also restricted to the continent Euramerica (composed of the equatorial continents Avalonia, Baltica and Laurentia), which had been completely colonized by the genus during its merging and was unable to cross the vast expanses of ocean separating this continent from other parts of the world, such as the southern supercontinent Gondwana. As such, "Eurypterus" was limited geographically to the coastlines and shallow inland seas of Euramerica.