Species Account

Neilonella latior (Jeffreys, 1876)

Nuculanoidea : Neilonellidae

Tebble name: n/a
Smith & Heppell name: Yoldiella striolata (Brugnone, 1876)/Neilonella pusio var. salicensis (Seguenza, 1877)

Notes on Nomenclature

Here previously as Pseudoneilonella latior.

To size: To 7mm. Shell Structure: Larger specimens relatively solid but smaller individuals moderately thin and fragile. Equivalve: Equivalve. Equilateral: Slightly inequilateral, beaks just in front of midline, approximately 40-45% of total length from anterior end. Becomes more inequilateral with growth. Tumidity: Relatively tumid. Outline: 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

Widely distributed in the Atlantic deep-sea basins, on the continental slopes and in the Mediterranean. Depth range 500m to >4000m.

Depth Range
Bathyal (500 - 2000m)
Abyssal Rise (2000 - 4000m)

Additional Information & Related Species

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.


  • Conchological Society of Great Britain & Ireland
    Provides resources for understanding, identifying, recording, and conserving molluscs
    Check List of European Marine Mollusca
  • MarLIN
    The Marine Life Information Network for Britain and Ireland (MarLIN) provides information for marine environmental management, protection and education. It is a centre of excellence in spatially based and time-series marine biological information and supports good stewardship in the marine environment.
  • NBN Gateway
    National Biodiversity Network's Gateway. Use it to explore UK biodiversity data, as contributed by participating data providers.
  • BivAToL
  • MarBEF
  • Malacological Society
  • Unitas Malacologica
  • Census of Marine Life
  • MarBEF
    MarBEF, a network of excellence funded by the European Union and consisting of 94 European marine institutes, is a platform to integrate and disseminate knowledge and expertise on marine biodiversity, with links to researchers, industry, stakeholders and the general public.

Record last modified: 22/03/2016