A restored sketch sheet of Eotrogulus fayoli (Note it's legs are missing around the body)
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Opiliones
Suborder: Dyspnoi
Superfamily: Troguloidea
Family: Eotrogulidae
Petrunkevitch, 1955
Genus: Eotrogulus
Thevenin, 1901
Species: E. fayoli
Binomial name
Eotrogulus fayoli
Thevenin, 1901

Eotrogulus is an extinct genus of harvestmen known from the Carboniferous fossil record. The genus is the only member of the family Eotrogulidae and contains one species Eotrogulus fayoli. Eotrogulus was found in the Coal Measures of Commentry in northern France, together with Nemastomoides elaveris. Eotrogulus was previously thought to be a trigonotarbid.