Late Bashkirian (Early Pennsylvanian) horseshoe crabs (Chelicerata: Xiphosura) from the Mospyne Formation, Donets Basin, Ukraine

Vitaly Dernov

doi:10.14746/logos.2026.32.geo05

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Late Bashkirian (Early Pennsylvanian) horseshoe crabs (Chelicerata: Xiphosura) from the Mospyne Formation, Donets Basin, Ukraine

Geologos

Volume 32 (2026): Issue 1 (May 2026)

By: Vitaly Dernov

Open Access

|Sep 2026

Abstract

The Bashkirian xiphosurid assemblage of the Donets Basin comprises only three genera: Euproops, Prestwichianella, and Belinurus. With the exception of Euproops danae, all recorded species appear to be endemic to the basin. A small xiphosurid assemblage consisting of Belinurus sp., ?Euproops sp., and indeterminate xiphosurid remains is described from non-marine deposits of the Mospyne Formation (upper Bashkirian, Lower Pennsylvanian) in the central Donets Basin, eastern Ukraine. Together with Belinurus iswarinensis (Chernyshev, 1927), previously reported from the Bashkirian Mandrykyne and Mospyne formations, these specimens represent the oldest known Carboniferous xiphosurids from the Donets Basin.

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