Grandilingulata is a Calymmian organism, found in the Gaoyuzhuang Formation of China.

It has been tentatively placed inside Eukaryota due to its complexity and size, alongside other fossils from the formation.

[2] As it dates from the earliest Mesoproterozoic, its exact classification is unknown beyond a probable eukaryotic affinity.

The genus name Grandilingulata means "large tongue", referring both to its tongue-like shape and its large size for organisms of the time period.

The specific name qianxiensis refers to the location of a newly discovered fossiliferous location in Qianxi County, Hebei.