Yoldiella valorousae Killeen & Turner, 2009
Nuculanoidea : Nuculanidae
Moderately inequilateral, the beaks lie approximately 40% of dorsal margin length from anterior.
Elongate-oval: postero-dorsal margin long, gently sloping; antero-dorsal margin sloping more steeply; posterior margin broadly rounded; anterior margin rounded with the extremity situated above the horizontal midline; ventral margin deeply rounded, lowest point posterior of midline. Umbo small, not prominent, projecting just above the dorsal margin, and lies anterior of midline.
Sculpture: Very weak concentric striations. Margin: Smooth. Ligament: Amphidetic, attached internally to the underside of the beak without a projecting chondrophore or resilifer. Relatively short. Hinge: Taxodont: Hinge long, narrow with 8-10 posterior and 7-9 anterior, chevron-shaped, teeth on either side of the ligament. Pallial Musculature: Posterior adductor muscle scar rounded. Periostracum: Silky, pale straw coloured. Colour: Translucent white. Additional Characters: The hind-gut lies on the right side of the body. It runs along the antero-dorsal margin then clockwise up towards the umbo then turning anticlockwise and then back on itself.
Distribution & Ecology
Western European Basin from latitudes of 43°N to 58°N, and at depths of 1491-3220 m. Also known from the Canaries and Sierra Leone Basins.
Bathyal (500 - 2000m)
Abyssal Rise (2000 - 4000m)
Additional Information & Related Species
Nuculanoidea : Nuculanidae
Listed are literature citing Yoldiella valorousae Killeen & Turner, 2009. Reference containing the species Type Description is highlighted.
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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