TY - JOUR N2 - Until now Eocene chimeroid holocephalians of Antarctica have been known from only a few specimens attributed to two species from the Eocene of Seymour Island. New material collected by Polish and English field parties includes numerous tooth plates and fin spine fragments from the Eocene La Meseta Formation. We describe a new species, Callorhinchus stahli, based on two mandibular and a single fragmentary palatine tooth plate. In addition, the stratigraphic distribution and diversity of Eocene Antarctic chimeroids is discussed. The chimeroid Ischyodus shows the greatest stratigraphic distribution with its greatest abundance in the middle parts of the La Meseta Formation while Chimaera and Callorhinchus are restricted to the lower ones. Changes in the environment and habitat availability most probably triggered the distributional pattern and the disappearance of chimeroids. L1 - http://journals.pan.pl/Content/110663/PDF-MASTER/ppr24-029.pdf L2 - http://journals.pan.pl/Content/110663 PY - 2003 IS - No 1 EP - 51 KW - Antarctica KW - La Meseta Formation (Eocene) KW - palaeontology (chimeroid fish) KW - new species KW - ecology A1 - Kriwet, Jürgen A1 - Gadzicki, Andrzej PB - Polish Academy of Sciences PB - Committee on Polar Research VL - vol. 24 DA - 2003 T1 - New Eocene Antarctic chimeroid fish (Holocephali, Chimaeriformes) SP - 29 UR - http://journals.pan.pl/dlibra/publication/edition/110663 T2 - Polish Polar Research ER -