entity_id,source_id,evidence_type,source_note
ENT_NOR_NIDHOGG,SRC_POETIC_EDDA,direct attestation,Völuspá (Níðhöggr gnaws the roots of Yggdrasil and flies away at Ragnarök carrying corpses in his wings); Grímnismál (he chews the roots of Yggdrasil alongside the serpents); the primary attestations for this figure
ENT_NOR_NIDHOGG,SRC_PROSE_EDDA,direct attestation,"Named in Snorri Sturluson, Prose Edda."
ENT_NOR_NIDHOGG,SRC_SIMEK_NORTHERN_MYTH,scholarly attestation,"Attested in Simek, Dictionary of Northern Mythology."