Analysis of malacofauna from the Poręba Dzierżna 24 site, Wolbrom commune, Lesser Poland Voivodeship (Kraków-Częstochowa Upland)

Malacological analysis at the Poręba Dzierżna 24 site (Udorka Valley), in the Kraków-Częstochowa Upland, conducted by Marcin Szymanek, included 36 samples collected in trenches I and II. Trench I consisted of 25 samples collected in 2018 (5 samples) and 2023 (20 samples) from 9 layers and a mine dump. In trench II, 11 samples collected from 8 layers in 2020-2022 were analyzed. Samples were obtained and analyzed under a grant of National Science Center, Poland, No. 2018/30/E/HS3/00567 "Chocolate flint on the Kraków-Częstochowa Upland. Mining, use and distribution".