Middle Miocene (Badenian) chitons (Mollusca, Polyplacophora) from the Central Paratethys 1: Várpalota (Bakony Mts, Hungary)

Dulai, Alfréd and Katona, Lajos Tamás (2024) Middle Miocene (Badenian) chitons (Mollusca, Polyplacophora) from the Central Paratethys 1: Várpalota (Bakony Mts, Hungary). FRAGMENTA PALAEONTOLOGICA HUNGARICA, 39. pp. 29-53. ISSN 1586-930X

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Abstract

Várpalota has long been known for its Middle Miocene (mainly mollusc) fossil remains.However, very little information is available on Polyplacophora species. In this paper we discuss thechiton assemblages of two contemporaneous (lower Badenian) sites, the famous Szabó sand pit, anda temporary trench in the Faller Street. The studied material derived from four different collectionsources; the Szabó sand pit specimens are from the Hungarian Natural History Museum, Budapestand the Naturalis Biodiversity Center, Leiden, while the Faller Street chitons are from the BakonyNatural History Museum, Zirc and Tibor Berta’s private collection in Veszprém. Altogether morethan 400 specimens represent mainly eroded fragmentary valves of eight Polyplacophora species.Most of the identified taxa are well known from the Middle Miocene chiton assemblages of the Central Paratethys as well as from the Hungarian localities (Ischnochiton rissoi (Payraudeau), Rhyssoplaxcorallina (Risso), Lepidochitona lepida (Reuss), Acanthochitona faluniensis (Rochebrune), Cryptoplaxweinlandi Šulc). A further Acanthochitona taxon cannot be identified to species level at present dueto the scarcity of available material. Parachiton africanus (Nierstrasz) was found for the first timefrom Hungary and Acanthochitona oblonga (Leloup) was recorded for the first time not only fromHungary but also from the whole Central Paratethys. With 45 figures.

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