Remisovicrinus polonicus n. sp (Crinoidea, Cyrtocrinida) from the late Middle Oxfordian of the Cracow-Czestochowa Upland (southern Poland)

摘要

The paper describes a new crinoid species of the family Eugeniacrinitidae ROEMER, 1855, Remisovicrinus polonicus n. sp. from the late Middle Oxfordian of the Cracow-Czestochowa Upland (Ogrodzieniec Quarry) in southern Poland. It is characterised by an unusual funnel shaped cup with its lower part separated by a non-typical constriction. In comparison to a closely related species, Remisovicrinus taprakensis ARENDT, 1974 known only from the uppermost Callovian and the lower-most Oxfordian succession of Crimea (Ukraine), this new species has been found in younger strata. Moreover, Remisovicrinus polonicus differs from R. taprakensis by its small dimensions and some morphological features.