Articles | Volume 22, issue 2
Research article
14 Oct 2019
Research article |  | 14 Oct 2019

The new encrusting microproblematicum Circumpodium enigmaticum and its attachment trace Circumpodichnus serialis from the Middle Jurassic of Normandy (France)

Max Wisshak and Liane Hüne

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Cited articles

Adams, C. G.: Calcareous adherent foraminifera from the British Jurassic and Cretaceous and the French Eocene, Palaeontology, 5, 149–170, 1962. 
Andrews, E. A.: The bottle-animalcule, Folliculina; œcological notes, Biol. Bull., 26, 262–285, 1914. 
Arendt, Y. A.: Traces of Augoichnus dituberculatus gen. et sp. nov. on Hypermorphocrinus magnospinosus from the Lower Permian of Cisuralia, Paleontol. J., 46, 886–893, 2012. 
Armstrong, H. A. and Brasier, M. D.: Microfossils, 2nd Edn., Blackwell Publishing, Malden, 296 pp., 2005. 
Barnard, T.: Some Mesozoic adherent foraminifera, Palaeontology, 1, 116–124, 1958. 
Short summary
Here, we describe an enigmatic new microfossil that was found encrusting a belemnite from the Middle Jurassic of the Falaises des Vaches Noires in Normandy, France. The organism has produced a conspicuous attachment etching on the belemnite for better adhesion and this trace fossil is new to science as well. Based on morphological criteria and the capacity to bioerode, the new microproblematicum can best be compared to encrusting bryozoans and foraminiferans.