Chelediscus[2] is a genus of Eodiscinid trilobite belonging to the family Weymouthiidae Kobayashi T. (1943),[3] Order Agnostida Salter (1864).

[4] The Treatise assigns this genus to the Calodiscidae; Cotton and Fortey (2005) [5] however move it to the Weymouthiidae.

Chelediscus lived during the later part of the Botomian stage.[1].

Chelediscus is known from upper lower Cambrian strata in England, Newfoundland, New York State and Russia (Rushton, 1966; Fletcher, 2003;[6] Rasetti, 1967;[7] Jell in Kaesler, 1997;[8] C. acifer is also recorded from a Limestone at the top of the Torneträsk Formation, probably Ornamentaspis?

linnarssoni Assemblage Zone, in the Luobakti section, south of Lake Torneträsk, northern Swedish Lapland [9] and the lower to middle Brigus Formation (Hupeolenus Zone; Tannudiscus balanus Subzone) at Cape St Mary's, Newfoundland (Fletcher, 2003).