Genus
Nicholsonella Ulrich, 1890
Selection of related publications
Pushkin, V. I. 1987. Ordovikskie mšanki podotrâda Halloporina Belorussii i smežnyh rajonov Vostočno- Evropejskoj platformy.  Ordovik Belorussii, pp. 145-232.   Nauka i Tehnika. 
List of species
1. Nicholsonella faveolata Pushkin, 1987 | Idavere Substage
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Bryozoa | 
| Class | Stenolaemata | 
| Superorder | Palaeostomata | 
| Order | Trepostomata | 
| Suborder | Halloporina (suborder) | 
| Family | Trematoporidae | 
| Genus | Aostipora | 
| Batostoma | |
| Bythopora | |
| Mesotrypina | |
| Nicholsonella | |
| Species | faveolata | 
| Genus | Radiotrypa | 
| Trematopora | |
| Trematoporina |