Eoatlanta ravni nov. sp. (Mollusca: Gastropoda, ?Hipponicidae) from the Danian (early Paleocene) of Faxe, Denmark

摘要

In the very rich mollusc fauna of the middle Danian deposits at Faxe, Denmark, a characteristic gastropod, previously referred to the French Eocene (Lutetian) species Eoatlanta spiruloides (Lamarck, 1804) is common. The genus Eoatlanta used to be assigned to the family Atlantidae Rang, 1829 in the superfamily Pterotracheoidea Rafinesque, 1814. Lozouet (2012) removed the genus Eoatlanta from the Atlantidae and included it in the Vanikoroidea Gray, 1840, family Hipponicidae Troschel, 1861. A renewed study of Faxe material resulted in the recognition of a new species Eoatlanta ravni, in several respects differing from Eoatlanta spiruloides.