Yoldiella biscayensis Allen, Sanders & Hannah, 1995
Nuculanoidea : Nuculanidae
Inequilateral, beaks situated well to the anterior of midline.
Oval: antero-dorsal margin short, gently sloping. postero-dorsal margin long, gently sloping; junction between the umbo and postero-dorsal margin distinctly angled or notched; anterior and posterior margins broadly rounded; ventral margin is deeply curved. Umbo relatively narrow, not prominent, projecting only just above the dorsal margin.
Sculpture: Very weak and irregular striations. Margin: Smooth. Ligament: Amphidetic, relatively short, attached internally to the underside of the beak without a projecting chondrophore or resilifer. Hinge: Taxodont: Hinge plate relatively long and narrow, slightly curved posteriorly; 8-10 well-developed chevron-shaped teeth on either side of the ligament. Periostracum: Silky, pale yellow, straw-coloured. Colour: Translucent white. Additional Characters: The hind-gut forms a simple, rounded loop on the right side of the body.
Distribution & Ecology
Abyssal Rise (2000 - 4000m)
Abyssal Plain (4000m +)
Additional Information & Related Species
Nuculanoidea : Nuculanidae
Listed are literature citing Yoldiella biscayensis Allen, Sanders & Hannah, 1995. Reference containing the species Type Description is highlighted.
Allen, J.A., Sanders, H.L. & Hannah, F. 1995. Studies on the deep-sea Protobranchia (Bivalvia); the subfamily Yoldiellinae. Bulletin of the British Museum of Natural History. 61: 11-90.
Killeen I.J. & Turner J. 2009. Yoldiella and Portlandia (Bivalvia) from the Faroe-Shetland Channel and Rockall Trough, Northeast Atlantic. Journal of Conchology. 39 (6): 733-778.
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