Species
Dittopora annulata (Eichwald, 1860)
Synonymy list
1860     Chaetetes annulatus — Eichwald , pp. 480, fig. 28:2a-c; 3a-d
1861     Chaetetes annulatus — Eichwald , pp. 113, fig. VII 2
1877     Dittopora annulata Eichwald sp. — Dybowski , pp. 86, fig. II 5
1881     Dittopora annulata — Nicholson , pp. 234, fig. 49
1911     Dittopora annulata (Eichwald) — Bassler , pp. 304, fig. 3:5; 11:16,17; text fig. 186,187
1951     Dittopora annulata — Modzalevskaya , pp. 17
1953     Dittopora annulata (Eichw.) — Modzalevskaya , pp. 105
1978     Dittopora annulata (Eichwald, 1860) — Astrova , pp. 52
1985     Dittopora annulata (Eichwald) — Taylor & Curry , pp. 156
1986     Dittopora annulata (Eichwald), 1860 — Modzalevskaya , pp. 78, fig. I 8-13
Selection of related publications
Koromyslova, A. V. 2011. Bryozoans of the Latorp and Volkhov horizons (Lower-Middle Ordovician) of the Leningrad Region.  Paleontological Journal   45,   8,   887-980. DOI:10.1134/S0031030111080028
Gorjunova, R. V. 1996. Phylogeny of the Paleozoic bryozoans.  Transactions of the Paleontological Institute (PIN)   267,      1-163.  Nauka. 
Modzalevskaya, E. A. 1986. Bryozoa of the family Dittoporidae from Ordovician of Leningrad area.  Ežegodnik Vsesoûznogo Paleontologičeskogo Obŝestva   XXX,      74-91.
Astrova, G. G. 1978. Istoriâ razvitiâ, sistema i filogeniâ mšanok otrâda Trepostomata.  Transactions of the Paleontological Institute (PIN)   169,      1-240.  Nauka. 
Männil, R. M. 1959. Questions of stratigraphy and bryozoans of the Ordovician of Estonia. pp. 1-852.  Institut Geologii Akademii Nauk Estonskoi SSR. 
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.
Eichwald, E. 1861. Paleontologiâ Rossii. Drevnij period. II. Fauna grauvakkovoj, gornoizvestkovoj i medistoslancevatoj formacij Rossii. pp. 1-521.  R. Golike (former Ya. Ionsona). 
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Bryozoa | 
| Class | Stenolaemata | 
| Superorder | Palaeostomata | 
| Order | Trepostomata | 
| Suborder | Halloporina (suborder) | 
| Family | Dittoporidae | 
| Genus | Dittopora | 
| Species | annulata | 
| clavaeformis | |
| colliculata | |
| lamellata | |
| ramosa | |
| sokolovi | 
References based on distribution
- Koromyslova, 2011 Latorp Superstage
- Koromyslova, 2011 Kunda Stage
- Eichwald, 1861a Pulkovo, Leningrad District
- Dybowski, 1877 Popovka River, Leningrad Oblast
- Koromyslova, 2011 Vassilkovo, Leningrad Oblast
- Koromyslova, 2011 Lynna river, Leningrad Oblast
- Bassler, 1911b Popovka River, Leningrad Oblast
- Bassler, 1911b Isvos, Leningrad Oblast
- Bassler, 1911b Vassilkovo, Leningrad Oblast
- Bassler, 1911b Obukhovo outcrop, Leningrad district