Dariopsis Malakhova 1975

Malakhova 1975. [Foraminifera, algae and the stratigraphy of the Lower Visean of the eastern slope of the Southern Urals.] Trudy Instituta Geologii i Geokhimii Akademiya Nauk SSSR Ural'skii Nauchnyi Tsentr, No. 112 1975: 71-109