Undescribed vachonisiids


An possible acercostracan marrellomorph from the Ordovician Beecher’s Trilobite. Similar features are also found in Xylokorys chledophilia from the Silurian of England, and Vachonisia rogeri from the Devonian of Germany, indicating acercostracan affinities for this new species. This taxon is characterised by the possession of a cordiform dorsal carapace with at least two pairs of marginal spines that covering the posterior body. The head comprises two stalked eyes. The trunk possesses more than 25 pairs of delicate, almost filamentous appendages.