Bryozoa
Genus

Ulrichostylus Bassler, 1952

https://files.geocollections.info/large/9c/c8/9cc8523e-3fb3-46f7-9f77-5a8e9ed08a6e.jpg
Selection of related publications
Bassler, R. S. 1911. The Early Paleozoic Bryozoa of the Baltic Provinces. Bulletin of the US National Museum 77, 1-382.
List of species
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Classification
References based on distribution