Research Paper
Carboniferous conulariids (Cnidaria: Scyphozoa) from Ukraine
VIKTOR V. OHAR
ESI “Institute of Geology”, Taras Shevchenko National University of Kyiv, Kyiv 03022, Ukraine; ogar_victor@ukr.net.
Corresponding author
VITALY S. DERNOV
Department of Palaeontology and Stratigraphy of Palaeozoic Sediments, Institute of Geological Sciences, National Academy of Sciences of Ukraine, Kyiv 01054, Ukraine; vitalydernov@gmail.com.
ABSTRACT
An assemblage of Carboniferous conulariids (Cnidaria) from Ukraine, consisting of Paraconularia inaequicostata (de Koninck, 1883) s.l., P. irregularis (de Koninck, 1843), P. kohli Brew & Beus, 1976, P. quadrisulcata (Sowerby, 1821), P. lata n. sp., P. cf. crustula (White, 1880), ?P. cf. subulata (Hall, 1858), ?Holoconularia rossica Van Iten et al., 2023, and ?H. poletaevi n. sp., is described. Conulariids have been collected from 15 localities, the detailed palaeontological and stratigraphic characteristics of which are summarized here. Nearly all the conulariids were found in the Donets Basin in the Serpukhovian–early Bashkirian and middle–late Moscovian intervals, which are separated from each other by an interval apparently lacking conulariids. Two new species, Paraconularia lata n. sp. and ?Holoconularia poletaevi n. sp., occur in Moscovian strata. The results of the present study confirm the ability of certain conulariids to withstand major environmental perturbations, as there are no significant changes in species composition across the mid-Carboniferous (Mississippian–Pennsylvanian) boundary. Three species, very similar to species in North America, commonly occur in Carboniferous deposits of Ukraine, namely ?Paraconularia
subulata (middle Visean), P. kohli, and P. cf. crustula (Moscovian). The discovery of these three species in the Donets Basin of Ukraine underscores the cosmopolitan distribution of at least some conulariids during Carboniferous times.
Key words: Mississippian, Pennsylvanian, Paraconularia, Holoconularia, Donets Basin, Dnipro-Donets Depression
How to cite: Ohar, V. V., & Dernov, V. S. (2024). Carboniferous conulariids (Cnidaria: Scyphozoa) from Ukraine. Spanish Journal of Palaeontology, 39.
Received 14 June 2024, Accepted 5 August 2024, Published online 26 September 2024
https://doi.org/10.7203/sjp.29338
