Dacrydium hyalinum Monterosato 1875

• Main Authors: Negri, Mauro Pietro, Corselli, Cesare
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2016
• Subjects: Biodiversity; Taxonomy; Animalia; Mollusca; Bivalvia; Mytiloida; Mytilidae; Dacrydium; Dacrydium hyalinum; Salas; Western Basin; North Atlantic
• Online Access: https://doi.org/10.5281/zenodo.6082151; http://treatment.plazi.org/id/03C587A5FFD3F962FF3BFF78621BFCF2

Dacrydium hyalinum (Monterosato, 1875) Fig. 4 g–i Mytilus ( Dacrydium ) hyalinus Monterosato, 1875 [a] (p. 10). Dacrydium hyalinum (Monterosato, 1875) — Nordsieck 1969 (p. 30); Mattson & Warén 1977 (p. 1, figs. 3, 9); Salas & Gofas 1997 (p. 266, figs. 20–24); Önen & Doğan 2007 (p. 236, fig. 3). Dacrydium cf. hyalinum Monterosato, 1875 — Salas 1996 (p. 53, figs. 91–93). Dacrydium hyalinum Monterosato, 1875 — Giannuzzi-Savelli et al. 2001 (p. 132, figs. 236–238); Repetto et al. 2005 (p. 294, mid right fig.); Peñas et al. 2006 (p. 140, figs. 389–395). Diagnostic characters . Much higher than long, bean-shaped shell; small beaks; very short anterior side; convex antero-ventral margin nearly parallel to the postero-dorsal one. Prodissoconch: shell type ST-2D; length about 170 µm; roundish D-shaped outline; convex profile; P-1 surface pitted, with roughly commarginal, irregular wrinkles; rim-like metamorphic lip barely separated from P-1; transition to the nepioconch well marked. Occurrence . Box-corer sample BC72 (4 specimens); core BC72 (2). Maximum height: 2 mm. Distribution and habitat . Dacrydium hyalinum appears to be endemic of the Mediterranean Sea, from the western basin to Turkey, although similar forms have been reported from some North Atlantic seamounts; it occurs on circalittoral to bathyal hard bottoms (frequently corals), as well as on mud and sand (Nordsieck 1969; Salas & Gofas 1997; Önen & Doğan 2007). Fossil record. Bathyal Pleistocene of Sardinia (Di Geronimo & Bellagamba 1985). Published as part of Negri, Mauro Pietro & Corselli, Cesare, 2016, Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy), pp. 1-97 in Zootaxa 4186 (1) on page 24, DOI:10.11646/zootaxa.4186.1.1, http://zenodo.org/record/165288