Phylogenetic reconstruction based on COI reshuffles the taxonomy of hyalosphenid shelled (testate) amoebae and reveals the convoluted evolution of shell plate shapes Author Anush Kosakyan Author Daniel J. G. Lahr Author Matthieu Mulot Author Ralf Meisterfeld Author Edward A. D. Mitchell Author Enrique Lara text Cladistics 2016 32 606 623 journal article 10.1111/cla.12167 b1b40acc-a139-4224-b746-a4229d457dbf 238712 Planocarina gen. nov. Kosakyan, Lahr, Mulot, Meisterfeld, Mitchell and Lara Description. Test elongated-pyriform, with a distinct neck, lateral margins tapering towards the aperture. A flat keel surrounds the entire posterior part of the test. Test hyaline or slightly yellowish, composed of circular to elongated shell plates probably recycled from euglyphid testate amoeba prey. Differential diagnosis. See diagnosis of Gibbocarina . Type species. Planocarina carinata (Archer 1867) Kosakyan, Lahr, Mulot, Meisterfeld, Mitchell and Lara comb. nov. [syn.: Nebela carinata (Archer) Leidy, 1879 ]. Included taxa. We include in this genus all Nebela species with a flat keel, such as: N. carinata , N. marginata , N. maxima and N. spumosa , but excluding those with a lateral horn (i.e. the genus Cornutheca ). Etymology. The name of the genus derives from the Latin words “planus” and “carina”, meaning flat keel, a characteristic trait for the members of the genus.