Neilonella latior (Jeffreys, 1876)
Nuculanoidea : Neilonellidae
Larger specimens relatively solid but smaller individuals moderately thin and fragile.
Slightly inequilateral, beaks just in front of midline, approximately 40-45% of total length from anterior end. Becomes more inequilateral with growth.
Oval to rounded triangular: height of shell approximately 75% of length; antero-dorsal and postero-dorsal margins almost straight, moderately sloping; anterior and posterior margins narrowly rounded to very slightly pointed; ventral margin deeply rounded. Umbo relatively prominent, relatively narrow, rounded, projecting well above the dorsal margin, anterior of midline.
Sculpture: Prominent, but irregularly spaced, raised concentric lines. Margin: Smooth. Ligament: External ligament opisthodetic, visible either side of the beak but very short anteriorly. Tiny internal amphidetic ligament seated below the beak in a minute triangular formed resilifer. Hinge: Taxodont: Hinge plate relatively broad, continuous with long chevron shaped teeth, 18-19 posterior, and 13-14 anterior, which are drawn up into points, on either side of the ligament. Periostracum: Glossy, straw coloured. Colour: Translucent white. Additional Characters: The hind-gut forms a simple, rounded loop on the right side of the body.
Distribution & Ecology
Bathyal (500 - 2000m)
Abyssal Rise (2000 - 4000m)
Additional Information & Related Species
Nuculanoidea : Neilonellidae
Listed are literature citing Neilonella latior (Jeffreys, 1876). Reference containing the species Type Description is highlighted.
Allen J.A. & Sanders H.L. 1996. Studies on the deep-sea Protobranchia (Bivalvia): the family Neilonellidae and the family Nuculanidae. Bulletin of the British Museum of natural History London (Zoology). 62: 101-132.
Jeffreys J G 1876. New and peculiar Mollusca of the Pecten, Mytilus and Arca families, procured in the Valorous expedition. Annals and magazine of natural History. (4)18: 424-436.
La Perna R. 2007. Taxonomy of the family Neilonellidae (Bivalvia, Protobranchia): Miocene and Plio-Pleistocene species of Pseudoneilonella Laghi, 1986 from Italy. The Veliger. 49(3): 196-208.
Warén A 1989. Taxonomic comments on some protobranch bivalves from the northeastern Atlantic. Sarsia. 74: 223-259.
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