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Primovula (Diminovula) bimaculata

Gastropoda - Ovulidae

Taxonomy
Amphiperas bimaculata was named by Adams (1854) [m. kosnik taxon no: 9775]. It is extant. Its type specimen is BMNH 1961146, a shell.

It was recombined as Ovula bimaculata by Weinkauff (1881); it was recombined as Pseudosimnia (Diminovula) bimaculata by Schilder (1941); it was recombined as Primovula (Diminovula) bimaculata by Allan (1956); it was recombined as Margovula bimaculata by Cate (1973), Wilson (1993) and Jensen (1996).

Synonymy list
YearName and author
1854Amphiperas bimaculata Adams p. 131
1881Ovula bimaculata Weinkauff p. 176 figs. pl. 46, figs. 1, 4
1941Pseudosimnia (Diminovula) bimaculata Schilder p. 107
1956Primovula (Diminovula) bimaculata Allan p. 123
1973Margovula bimaculata Cate p. 18 fig. 30
1993Margovula bimaculata Wilson p. 201
1996Margovula bimaculata Jensen p. 21

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
classGastropodaCuvier 1797
RankNameAuthor
superorderHypsogastropoda(Ponder and Lindberg 1997)
infraorderLittorinimorphaGolikov and Starobogtov 1975
superfamilyCypraeoidea(Rafinesque 1815)
familyOvulidaeFleming 1822
subfamilyPrionovolvinaeFehse 2007
genusPrimovulaIredale 1930
subgenusDiminovula
speciesbimaculata(Adams 1854)

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Diagnosis
ReferenceDiagnosis
C. N. Cate 1973Shell lightweight in form; shell color pale grey dorsally, with clouded, irregularly dispersed, sub-banded (though uniformly patterned) pale brown areas superimposed thereon; despite dorsal striation surface is sub-glossy; there is bright orange color within the terminal channels; outer lip, margins, terminal collars, teeth, funiculum, pale ivory; aperture fairly broad; anterior terminal ridge straight, well formed; outer lip thickened, shouldered above, with numerous (34) well defined denticles within; columella barely depressed, with fossula scarcely excavated and carinate within adaxially; base narrowly, convexly ovate, becoming narrow and sub-pointed in front, with a long, narrowly thickened, crenate funicular projection at the rear, which forms the left wall of the adapical canal.