Subspecies
Orbignyella expansa baltica Bassler, 1911
Synonymy list
1906     Orbignyella expansa — Bassler , pp. 26, fig. 10:5-8
1911     Orbignyella expansa baltica, new variety — Bassler , pp. 183, fig. text fig. 183
1984     Orbignyella (?) expansa baltica Bassler, 1911 — Spjeldnaes , pp. 10, fig. 3:10
Selection of related publications
Spjeldnaes, N. 1984. Upper Ordovician Bryozoans from Ojl Myr, Gotland, Sweden.  Bulletin of the Geological Institutions of the University of Uppsala   10,      1-66.
Männil, R. M. 1959. Questions of stratigraphy and bryozoans of the Ordovician of Estonia. pp. 1-852.  Institut Geologii Akademii Nauk Estonskoi SSR. 
Bassler, R. S. 1911. The Early Paleozoic Bryozoa of the Baltic Provinces.  Bulletin of the US National Museum   77,      1-382.
 Loading... 
Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Bryozoa | 
| Class | Stenolaemata | 
| Superorder | Palaeostomata | 
| Order | Trepostomata | 
| Suborder | Amplexoporina | 
| Family | Stenoporidae | 
| Subfamily | Atactotoechinae | 
| Genus | Orbignyella | 
| Species | expansa | 
| Subspecies | baltica | 
References based on distribution
- Bassler, 1911b Kärdla quarry
- Spjeldnaes, 1984a Öjle Myr, Gotland Hirnantian