Species: elongata BROAD & DINELEY, 1973
Etymology: Lagin, elongata, "protracted," in reference to teh extreme length of the shield.
Holotype: NMC 12745
Locality: Somerset, North-west Territories Province, Canada.
Horizon: Somerset Island Formation.
Biostratigraphy:
Age: Pridoli Epoch, Latest Silurian-Lochkovian Stage, Lower Early Devonian, Early Devonian,
Material:
Referred material:
Locality: Prince of Wales Island, North-west Territories Province, Canada.
Horizon: Peel Sound Formation.
Biostratigraphy:
Age: Pridoli Epoch, Latest Silurian-Lochkovian Stage, Lower Early Devonian, Early Devonian,
Material:
Number: Not given: