SG126 185-202 leloux 16-01-2007 09:07 Pagina 185 Columactinastraea anthonii sp. nov. (Scleractinia, Astrocoeniina), a new coral species from the Maastrichtian (Upper Cretaceous) of The Netherlands J. Leloux Leloux, J. Columactinastraea anthonii sp. nov. (Scleractinia, Astrocoeniina), a new coral species from the Maastrichtian (Upper Cretaceous) of The Netherlands. Scripta Geologica, 126: 185-201, 4 figs., 1 pl., Lei- den, November 2003. Jacob Leloux, Gortestraat 82, 2311 NM Leiden, The Netherland (
[email protected]). Key words — taxonomy, cerioid growth forms, Plesiosiderastraea, St. Pietersberg, Meerssen Member. Only four cerioid species of scleractinian corals have been described from the Maastrichtian in its type area; the montlivaltiid Isastrea angulosa (Goldfuss, 1826), and the astrocoeniids Actinastrea goldfussi d’Orbigny, 1849, A. faujasi (Quenstedt, 1881) and Columastrea fallax Umbgrove, 1925. A lectotype is selected for the latter species. A new cerioid species, Columactinastraea anthonii sp. nov., is recorded from the middle part of the Meerssen Member (Maastricht Formation) at the ENCI Quarry, Zuid Lim- burg, The Netherlands. It is well-preserved and differs from other Columactinastraea species mainly by the relatively large diameter of its lumen. Contents Introduction .................................................................................................................................................. 185 Preservation and association ...............................................................................................................