The oldest bifoliate cystoporate and two other bryozoan taxa from the Dapingian (Middle Ordovician) of north-western Russia

• Published in: Journal of Paleontology
• Main Authors: Anna V. Koromyslova, Petr V. Fedorov
• Format: Text
• Language: English
• Published: The Paleontological Society 2020
• Subjects: Holdfast; North-Western Russia
• Online Access: https://doi.org/10.1017/jpa.2020.73

Bryozoans from the Dapingian (Middle Ordovician) of the Baltic paleobasin remain poorly studied and their taxonomic composition is unclear. In this paper, three bryozoan taxa, a bifoliate cystoporate Planopora volkhovensis n. gen. n. sp., a trepostome Hemiphragma insolitum n. sp., and an esthoniopor...