Shell injuries in Densepustula Lazarev, 1982, Pennsylvanian productidine brachiopod from the Donets Basin, Ukraine

Authors

DOI:

https://doi.org/10.2110/

Keywords:

Productida, Carboniferous, shell injuries, palaeoecology

Abstract

Nine injured ventral valves of productidine brachiopods belonging to the genus Densepus­tu­la Lazarev, 1982, from the Mospyne, Smolyanynivka, Belaya Kalitva, and Kamensk formations (Upper Bash­kirian-lower Moscovian, Lower and Middle Pennsylvanian) of the Donets Basin (eastern Ukraine) were studied. Three morphological types of damage traces have been recognized: Type A) longitudinal, sub­longitudinal, and transversal thin straight or sinuous furrows, about 5-7 mm long and 0.5-1.5 mm thick; Type B) rounded and ellipsoidal pits, about 3-4 mm in diameter, located on the umbo, the an­te­ri­or margin of the ventral valve, and the lateral slopes of the ventral valve; and Type C) irregularly-shaped dimples on the anterior margin and in the sulcus, 2-3 mm in size. These injuries are present on 9 out of 61 (15%) of ventral valves studied, but entirely absent from dorsal valves (0 out of 25). The most likely producers of these damage traces are cartilaginous fishes and parasites of unclear affinity.

Author Biography

  • Vitaly Dernov, Institute of Geological Sciences of the NAS of Ukraine

    Department of Palaeontology and Stratigraphy of Palaeozoic Sed­i­ments, Oles Honchar Str., 55b, Kyiv (Ukraine)

CG2409

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Published

2024-09-20

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Articles

How to Cite

Shell injuries in Densepustula Lazarev, 1982, Pennsylvanian productidine brachiopod from the Donets Basin, Ukraine. (2024). Carnets Geol., 24, 143-162. https://doi.org/10.2110/