Information from the abstract
10Diplommatina ambiguaGodwin-Austen, 1892 Fig. 15 B Diplommatina ambigua Godwin-Austen, 1892: 513. Type locality: South of Burrail Range, Munipur. Godwin-Austen 1897: 8, pl. 64, fig. 2. Gude 1921: 302. Diplommatina (Eudiplommatina) ambigua — Kobelt and Möllendorff 1898: 135. Diplommatina (Diplommatina) ambigua — Kobelt 1902: 424. Type material examined. India • Syntypes. NHMUK 1903.7.1.2124, (7 shells; Fig. 15 B) from South of Burrail Range (figured in Godwin-Austen 1897: pl. 64, fig. 2); Godwin-Austen coll. Diagnosis. Shell dextral, ovate fusiform, dull, whitish. Whorls ~ 7–8, well rounded; spire elevated conical; suture wide, shallow. Teleoconch: earlier whorls with weak, narrowly and equally spaced radial ribs; penultimate and last whorls with slightly wide-spaced ribs. Penultimate whorl convex, equal in width to last whorl. Aperture circular; columellaris strong, directed downward. Peristome expanded, double, multi-layered; inner peristome slightly broader than outer peristome; parietal callus expanded. Columella straight; umbilicus closed. Distribution. This species was previously known only from its type locality in the Burrail Range, Manipur State, India. The record from Myanmar lacks a precise locality (Gude 1921), and the presence there has not yet been reconfirmed.
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Related topics: Diatoms and Algae Research · Calcium Carbonate Crystallization and Inhibition · Marine Sponges and Natural Products
Thai researcher and institutional participation
Piyoros Tongkerd · Arthit Pholyotha · Supunya Annate · Chirasak Sutcharit · Chulalongkorn University
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