Calamites sp. with oviposition scars

Update:

In a beautiful publication, Laaß et al. (2023) recently established several ichnotaxa for different types of oviposition scars occurring at the Piesberg quarry. This particular specimen, which I described in 2014, was also assigned to one of these new taxa, namely: Paleoincisurus hellmundi Laaß et al. 2023.

References:

• Wolterbeek, T.K.T. (2014) Eilegging door een insect uit het Carboon van de Piesberg. Grondboor & Hamer, 68(3), pp. 50-53.
• Laaß, M., Leipner, A., Hauschke, N., et Rößler, R. (2023) Oviposition abundance and diversity in the Middle Pennsylvanian: the exceptional fossil largerstätte Piesberg, northwest Germany. Palaeontographica, Abteilung B: Palaeobotany - Palaeophytology, 305(1), pp. 1-91.