Ostracoda
Family

Rishonidae Sohn, 1960

https://files.geocollections.info/large/d1/ce/d1ce9729-091e-4299-ad1e-f0e603120063.jpghttps://files.geocollections.info/large/c3/a5/c3a50bd3-3b03-4b6b-9503-4f5bbbea221c.jpg
Selection of related publications
Meidla, T. 1996. Late Ordovician Ostracodes of Estonia. Fossilia Baltica 2. pp. 1-222. Tartu University Press.
Pranskevičius, A. 1972. South Baltic Silurian Ostracoda. pp. 1-280. Mintis.