Species
Pterochitina retracta Eisenack, 1955
Synonymy list
1955 Pterochitina retracta sp. n. — Eisenack , pp. 317, fig. 1:13
Selection of related publications
Tammekänd, M., Hints, O., Nõlvak, J. 2010. Chitinozoan dynamics and biostratigraphy in the Väo Formation (Darriwilian) of the Uuga Cliff, Pakri Peninsula, NW Estonia. Estonian Journal of Earth Sciences 59, 1, 25-36. DOI:10.3176/earth.2010.1.02
Nõlvak, J. 1990. Ordovician chitinozoans. Field Meeting Estonia 1990. An Excursion Guidebook, pp. 77-79. Estonian Academy of Sciences.
Grahn, Y. 1984. Ordovician chitinozoa from Tallinn, northern Estonia. Review of Palaeobotany and Palynology 43, 1-3, 5-31. DOI:10.1016/0034-6667(84)90025-3
Occurrence in samples (CONOP)
Männamaa F-367 puurauk : 13 sample(s)
Mehikoorma 421 puurauk : 1 sample(s)
Ruhnu 500 puurauk : 2 sample(s)
Taga-Roostoja 25 puurauk : 6 sample(s)
Kerguta 565 puurauk : 15 sample(s)
Tartu 453 puurauk : 3 sample(s)
Viki puurauk : 15 sample(s)
Viljandi 91 puurauk : 2 sample(s)
Suhkrumäe paljand : 3 sample(s)
Osmussaare pank : 64 sample(s)
Uuga pank 1, Pakri poolsaar : 55 sample(s)
Proniewicze IG 1 puurauk, poola : 4 sample(s)
Kovel-1 puurauk : 2 sample(s)
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Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Class | Chitinozoa |
| Order | Operculatifera |
| Family | Desmochitinidae |
| Subfamily | Pterochitininae |
| Genus | Pterochitina |
| Species | hughleyensis |
| makroptera | |
| perivelata | |
| retracta |
References based on distribution
- Tammekänd et al., 2010 Uuga Cliff 1, Parki peninsula Lasnamägi Stage