Cainozoic Research, 7(1-2), pp. 109-117, April 2010 A in between striking convergence conchological morphology Oligocene-Miocene lottiids (Mollusca, Patellogastropoda) from the North Sea Basin and the Paratethys Olga+Yu. Anistratenko¹Adri+W. Burger² & Vitaliy+V. Anistratenko³ 1 Institute of Geological Sciences ofNationalAcademy ofSciences ofthe Ukraine, O. GontcharaSir., 55-b, 01601, Kiev, Ukraine. E-mail:
[email protected] 2 P. Soutmanlaan 18, NL-1701 MC Heerhugowaard, The Netherlands. E-mail:
[email protected] 3 1.1. SchmalhausenInstitute ofZoology ofNationalAcademy ofSciences ofthe Ukraine, B. Khmelnitsky Str., 15, 01601. Kiev, Ukraine. E-mail:
[email protected] Received 24 February 2009; revised version accepted 14 February 2010 The protoconch and teleoconchmorphology of Patella compressiuscala Karsten, 1849 (North Sea Basin, Chattian - Langhian) is de- The Boreobliniais established for this which is characterized indicative of scribed and illustrated. new genus species by a protoconch a lecithotrophic typeof early development, lacking even a short free-swimming larval stage. The distinctness ofBoreobliniagen. nov. from other Patellogastropoda such as Tectura,Patella, and Helcionexhibiting the typical patellogastropodprotoconch types is supported also by its unusual shell structure. An amazing heterochronous convergence ofboth protoconch and teleoconch morphology between the new species from the North Sea Basin and Miocene Flexitectura subcostata (Sinzow, 1892)from the Sarmatianofthe Paratethys is shown. Detailed descriptions and SEM images of species involved are presented. KEY WORDS:- Gastropoda, Lottidae, Miocene, Europe, protoconch, new genus Introduction marine gastropods with a planktotrophic larva in their on- togeny {e.g., Bandel, 1982, 1991; Sasaki, 1998; Kahn, 2004). The characters of embryonic, larval, and juvenile Oligocene and Miocene patellogastropods from the Medi- shells can be used to reconstruct the phylogeny of some terranean and Paratethys as well as from the North Sea the of the the gastropods.