Species
Mesotrypa expressa Bassler, 1911
Synonymy list
1911     Mesotrypa expressa, new species — Bassler , pp. 200, fig. text fig. 108
1953     Mesotrypa expressa Bassl. — Modzalevskaya , pp. 102
1978     Mesotrypa expressa Bassler, 1911 — Astrova , pp. 100
1981     Calloporella? expressa (Bassler, 1911) — Pushkin , pp. 66-67
2018     Mesotrypa expressa — Vinn et al. , fig. 3E,F
Selection of related publications
Vinn, O., Ernst, A., Wilson, M. A., Toom, U. 2019. Symbiosis of conulariids with trepostome bryozoans in the Upper Ordovician of Estonia (Baltica).  Palaeogeography, Palaeoclimatology, Palaeoecology   518,      89-96. DOI:10.1016/j.palaeo.2019.01.018
Vinn, O., Ernst, A., Toom, U. 2018. Symbiosis of cornulitids and bryozoans in the late Ordovician of Estonia.  Palaios   33,   7,   290-295. DOI:10.2110/palo.2018.018
Vinn, O., Ernst, A., Toom, U. 2018. Bioclaustrations in Upper Ordovician bryozoans from northern Estonia.  Neues Jahrbuch für Geologie und Paläontologie. Abhandlungen   289,   1,   113-121. DOI:10.1127/njgpa/2018/0752
Modzalevskaya, E. A. 1953. Trepostomaty ordovika Pribaltiki i ih stratigraficheskoe znachenie.  Trudy Vsesoûznogo Naučno-Issledovatel'skogo Geologo-Razvedočnogo Instituta (VNIGRI)         91-167.  Gostoptehizdat. 
Bassler, R. S. 1911. The Early Paleozoic Bryozoa of the Baltic Provinces.  Bulletin of the US National Museum   77,      1-382.
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Bryozoa | 
| Class | Stenolaemata | 
| Superorder | Palaeostomata | 
| Order | Trepostomata | 
| Suborder | Halloporina (suborder) | 
| Family | Monticuliporidae | 
| Subfamily | Monticuliporinae | 
| Genus | Mesotrypa | 
| Species | bystrowi | 
| discoidea | |
| egena | |
| esthonica | |
| excentrica | |
| expressa | |
| gutta | |
| insolita | |
| mesoporica | |
| piriformis | |
| raritabulata | |
| strumaeformis | |
| suprasilurica | |
| torosa | |
| tuberculata | |
| volchovensis | |
| Subspecies | orientalis | 
References based on distribution
- Bassler, 1911b Tallinn Kukruse Stage
- Modzalevskaya, 1953 Kukruse Stage