1847
Streptelasma expansa — Hall, pp. 17, fig. 4:6
1850
Streptelasma expansa — DOrbigny, pp. 24
1851
Streptelasma? expansa — Milne-edwards et Haime, pp. 399
1852
Streptelasma expansa Hall — Hall, pp. 7, fig. 4:6a-b
1873
Petraia expansa Hall sp. — Dybowski, pp. 347, 353, fig. 1:8a-b