Late Eocene (Priabonian) coleoid cephalopods from the Mandrykivka Beds of the city of Dnipro, Ukraine

 

Authors: Dernov V, Demianov V

Published in: Bulletin of Geosciences, volume 98, issue 3; pages: 215 - 232; Received 28 June 2023; Accepted in revised form 9 August 2023; Online 27 August 2023

Keywords: Ukraine, Priabonian, coleoid cephalopods, Beloptera, Belosaepia,

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Abstract

A low-diverse coleoid cephalopods assemblage consisting of Beloptera belemnoidea de Blainville, 1825, B. cf. longa Naef, 1922 and Belosaepia blainvillei (Deshayes, 1835) from the Priabonian Mandrykivka Beds of the Konzentrat- Lagerstätte Rybalsky Quarry in the city of Dnipro, central Ukraine, is described and diagnoses of these species are clarified. The study results show that Belosaepia blainvillei from the Mandrykivka Beds is the latest record of this genus in the fossil record; previously, this genus was thought to be distributed in the Ypresian to Bartonian strata (Eocene). The Rybalsky Quarry is the easternmost locality of the Paleogene coleoids in the Paratethyan Realm (i.e., in the so-called Beloglinian Basin or Subparatethys); here, these cephalopods probably came from the palaeobasin of the modern Western Europe by sublatitudinal sea currents. Here, the sepiid genus Belosaepia probably existed in seagrass meadows along with other animals such as bivalves, gastropods, and ostracods.

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