Trilobite Assemblage Of Calceola - Bearing Beds In Acanthopyge Limestone (Choteč Formation, Middle Devonian, Eifelian, Prague Basin, The Czech Republic) Author Budil, Petr Author Mergl, Michal text Fossil Imprint 2019 2019-08-29 75 1 79 91 http://dx.doi.org/10.2478/if-2019-0007 journal article 10.2478/if-2019-0007 2533-4069 5383369 Chotecops ? sp. Text-fig. 3g M a t e r i a l. Fragment of pygidium, internal mould. R e m a r k s. One pygidium, tentatively assigned to the Chotecops , has slightly more pronounced segmentation on lateral lobes. Relatively wide 4–5 pleural furrows are well distinguishable, and ribs seem to be more vaulted, narrower than in other Chotecops specimens coming from the locality. This may be artefact of different preservation, but also the axis seems to be slightly narrower and more vaulted. Axial rings are, however, imperceptible because of poor preservation.