Species: nielseni SAVE-SODERBERGH, 1935
Holotype: MGUH VP 7057 (previously MGUH At 6)
Locality: South-east of Kap Stosch, Stensio Plateu, Ridge VIII-XI, between 538 and 543 m altitude, Greenland.
Horizon: Wordy Creek Formation (Wordie Creek Group).
Biostratigraphy: Myalina kochi horizon, at the bottom of the Anodontophora fassaensis beds.
Age: Induan, Scythain (Early Triassic) Stage, Early Triassic.
Material: Imperfect internal cast of the posterior parts of 3 skulls.
Note: Shallow marine deposit.