1830
Gonambonites obliqua — Pander, fig. pl. 15: 5
1840
Orthis pyrum m. — Eichwald, pp. 157-158, German edition
1861
Leptaena pyron — Eichwald, pp. 244, fig. pl. 21: 30
1877
Orthisina pyron — Pahlen, pp. 3, fig. pl. 3: 6
1930
Gonambonites pyrum — Öpik, pp. 229-234, fig. pl. 20: 243-247; pl. 22: 278; text-fig. 26
1934
Estlandia pyron — Öpik, pp. 136, fig. pl. 46: 1
1949
Estlandia pyron (Eichwald, 1840) — Lesnikova, pp. 211, fig. pl. 41: 3-5