Petrafixia olssoni, Palmer, 1937

Kantor, Yuri, Lozouet, Pierre, Puillandre, Nicolas & Bouchet, Philippe, 2014, Lost and found: The Eocene family Pyramimitridae (Neogastropoda) discovered in the Recent fauna of the Indo-Pacific, Zootaxa 3754 (3), pp. 239-276 : 247

Pyramimitra? olssoni Palmer, 1937

Figures 3 G-H

Pyramimitra olssoni Palmer, 1937: 275 , pl. 37 figs 8–9.

Remarks. Palmer described Pyramimitra olssoni from a single broken specimen from the Claiborne Group Middle Eocene of Alabama. As noted by Palmer (1937), it has a cerithioid appearance, and is here retained with doubt in the genus Pyramimitra.

Pyramimitra? eocenica Garvie, 1996

Pyramimitra ( Petrafixia ) eocenica Garvie, 1996: 92, pl. 20 figs 8–9.

Remarks. Pyramimitra eocenica was described from the Middle Eocene of Central Texas based on young specimens only (up to 3.1 mm in length), including the holotype. Based on differences in sculpture and the lack of columellar plaits, we reject a classification of this species in Pyramimitra, but cannot make any decisive conclusion on its correct family or generic position.

Figures

FIGURE 3. Fossil species of Pyramimitra and Petrafixia. A – B. Pyramimitra quadralirata Dockery, 1977, MNHN. F. A 47754, Middle Eocene, Moody Branch Formation of Mississippi, USA. C. Fusus koeneni Cossmann & Lambert, 1884; Syntype, MNHN. F. J 05167, Pierrefitte Sands, St-Hilaire, Essonne, France. D – F. Pyramimitra (Petrafixia) koeneni sensu Cossmann, 1901, said to be from Pierrefitte Sands, St-Hilaire, Essonne, France, MNHN. F. J 08574, (specimen figured by Cossmann 1901, pl. 8 fig. 17). G – H. Pyramimitra? olssoni Palmer, 1937, holotype, Middle Eocene, Claiborne Group, Alabama, USA, SL 10 mm (after Palmer, 1937).