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Uchman et al., 2018d

The bivalve boring Cuenulites amygdaloides nov. isp. in siliceous sponges from the Upper Cretaceous of Germany

Uchman, A., Wisshak, M., Rodríguez-Tovar, F. J.
DOI
DOI10.1016/j.geobios.2018.08.005
Aasta2018
AjakiriGeobios
Köide51
Number5
Leheküljed481-486
Tüüpartikkel ajakirjas
Keelinglise
Id8202

Abstrakt

Lower Campanian siliceous sponges from epicontinental deposits of the Subhercynian Cretaceous Basin in Germany contain amygdaloidal depressions which are distinguished as a new ichnospecies of the ichnogenus Cuenulites. These bioerosion traces are interpreted as borings of semiendolithic bivalves, produced without significant rotation movement, probably mostly by chem ical action. As there are no signs of tissue reaction in the bored sponges, the structure is considered to be produced post mortem to the sponge, probably in a foreshore-shoreface setting, with redeposition offshore.

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