Conopora (Stylasteridae, Hydrozoa) from the Eocene of Seymour Island

摘要

The first fossil stylasterid from Antarctic is reported from La Meseta Formation (Telm1: Early Eocene) of Seymour Island (Antarctic Peninsula): Conopora mariae sp. nov. This also is the earliest reliable fossil record of the genus Conopora. Conopora mariae differs from congeners by having much larger cyclosystems (diameter 2.5–4.5 mm). Cyclosystems of that size are exceptional among the Stylasteridae.