
Fig. 9. Transverse serial sections of Ripidiorhynchus livonicus (Buch, 1834) from the early Frasnian of the Main Devonian Field, northwestern Russia. Numbers refer to distances in mm from the top of the ventral umbo. A. CNIGR 1/13076. B. Longitudinal section. CNIGR 2/13076, Chudovo beds, Vybuty rapids, Velikaya River, Pskov region. C. CNIGR 3/13076, Dubnik beds, quarry near town Stary Izborsk, Pechory district.
Published as part of Sokiran, Elena V., 2002, Frasnian-Famennian extinction and recovery of rhynchonellid brachiopods from the East European Platform, pp. 339-354 in Acta Palaeontologica Polonica 47 (2) on page 347, DOI: 10.5281/zenodo.13304772
Rhynchonellata, Brachiopoda, Animalia, Ripidiorhynchus, Biodiversity, Rhynchonellida, Trigonirhynchiidae, Taxonomy
Rhynchonellata, Brachiopoda, Animalia, Ripidiorhynchus, Biodiversity, Rhynchonellida, Trigonirhynchiidae, Taxonomy
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