Protacrodontidae, Cappetta, Duffin, and Zidek, 1993

Ginter, Michał & Złotnik, Michał, 2019, Mississippian chondrichthyan fishes from the area of Krzeszowice, southern Poland, Acta Palaeontologica Polonica 64 (3), pp. 549-564 : 556

Protacrodontidae indet.

Fig. 3I .

Material.— Two teeth (MWGUW/Ps/13/10, 20) from the Tournaisian, Czatkowice, sample A.

Description and remarks.— The teeth are characterised by a slightly asymmetrical, low protacrodont crown and an euselachian base. Teeth of this type are usually attributed to Protacrodontidae , but in the Carboniferous they also may represent other euselachian groups. It is notable that these two specimens are the only crushing teeth found in the material form Czatkowice.

Figures

Fig. 3. Chondrichthyan fish teeth from the Tournaisian of Czatkowice, Poland. A. Jalodus sp., MWGUW/Ps/13/2, in lingual (A1) and oral (A2) views. B–H. Falcatidae indet. 1. B. MWGUW/Ps/13/3, small seven-cuspid specimen in lateral (B1), labial (B2), oral (B3), and lingual (B4) views. C–F. Large five-cuspid specimens. C. MWGUW/Ps/13/4 in lingual (C1), oral (C2), and labial (C3) views. D. MWGUW/Ps/13/5 in oral (D1) and lingual (D2) views. E. MWGUW/Ps/13/6 in oral view. F. MWGUW/Ps/1/221 in lingual (F1) and oral (F2)views. G. MWGUW/Ps/13/7, large seven-cuspid specimen in basal/ labial view. H. MWGUW/Ps/13/8, large five-cuspid specimen without the intermediate cusplets in lingual (H1) and labial (H2) views. I. Protacrodontidae indet., MWGUW/Ps/13/9, in oral (I1) and lingual (I2) views.