Dacrydium vitreum (Holboll in Moller, 1842)
Mytiloidea : Mytilidae
Very small to 5mm.
Inequilateral beaks close to anterior margin.
Outline modioliform, beaks subterminal; ventral margin long more or less straight; dorsal margins almost straight, anterior dorsal very short, anterior narrowly rounded not pronounced, posterior dorsal long sloping gently relative to ventral margin; posterior and posterior ventral margins forming a smooth broad curve.
Prodissoconch small about 140μm in diameter.
Sculpture: Sculpture smooth except for scattered weak growth lines. Margin: Inner margin smooth. Ligament: Ligament small, internal, situated in a distinct sunken resilifer beneath the beaks. Hinge: Hinge plate narrow, ligament margin with up to 70 dysodont teeth, these as narrow, rather irregular flanges decreasing in size towards the beaks; a few more robust denticulate teeth are also present anterior of the beaks. Pallial Musculature: Anterior adductor scar about 1/2 size of posterior. Periostracum: Thin, greenish, semitransparent. Colour: White, glassy.
Distribution & Ecology
Continental Margin Zone (200 - 500m)
Bathyal (500 - 2000m)
Additional Information & Related Species
Mytiloidea : Mytilidae
Listed are literature citing Dacrydium vitreum (Holboll in Moller, 1842). Reference containing the species Type Description is highlighted.
Møller H O 1842. Index Molluscorum Groenlandiae. Naturhistorisk Tidsskrift, Kjøbenhavn. 4(1): 76-97.
Warén A 1991. New and little known Mollusca from Iceland and Scandinavia. Sarsia. 76: 53-124.
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