Lyonsiidae is a family of small saltwater clams, marine bivalve molluscs in the order Anomalodesmata.
Description
Members of this family have inequivalve, oblong valves that are nearly equilateral. The right valve is more convex than the left, and there are usually no teeth. The ligament connecting the two valves is in an internal groove, and the hinge has a free ossicle.
Genera and species
The World Register of Marine Species lists the following genera and species in the family:
- Allogramma <small> Dall, 1903</small>
- Allogramma elegans <small> (Thiele & Jaeckel, 1931)</small>
- Allogramma formosa <small> (Jeffreys, 1882)</small>
- Allogramma oahuense <small> (Dall, 1913)</small>
- Bentholyonsia <small> Habe, 1952</small>
- Bentholyonsia teramachii <small> (Habe, 1952)</small>
- Entodesma <small>Phillips, 1845</small>
- Entodesma beana <small>(d'Orbigny, 1853)</small>
- Entodesma brasiliense <small> (Gould, 1850)</small>
- Entodesma brevifrons <small> (G.B. Sowerby I, 1834)</small>
- Entodesma cuneata <small> (Gray, 1828)</small>
- Entodesma delicatum <small> (Marincovich, 1973)</small>
- Entodesma elongatulum <small> Soot-Ryen, 1957</small>
- Entodesma fretalis <small> (Dall, 1915)</small>
- Entodesma lucasana <small> (Bartsch & Rehder, 1939)</small>
- Entodesma navicula <small>(A. Adams and Reeve, 1850)</small>
- Entodesma patagonicum <small> (d'Orbigny, 1846)</small>
- Entodesma pictum <small>(G. B. Sowerby I, 1834)</small>
- Entodesma saxicola <small>(Baird, 1863)</small>
- Entodesma sechuranum <small> Pilsbry & Olsson, 1935</small>
- Entodesma solemyalis <small> (Lamarck, 1818)</small>
- Entodesma weisbordi <small> Macsotay & Campos, 2001</small>
- Lyonsia <small>Turton, 1822</small>
- Lyonsia adriatica
- Lyonsia alvarezii <small> d'Orbigny, 1846</small>
- Lyonsia arcaeforme <small> Martens, 1885</small>
- Lyonsia arenosa <small>(Moller, 1842)</small>
- Lyonsia argentea <small>Jeffreys, 1881</small>
- Lyonsia bracteata <small>(Gould, 1850)</small>
- Lyonsia californica <small>Conrad, 1837</small>
- Lyonsia cucumerina <small> Ivanova in Scarlato, 1981</small>
- Lyonsia floridana <small>Conrad, 1849</small>
- Lyonsia granulifera <small>A. E. Verrill and Bush, 1898</small>
- Lyonsia hyalina <small>Conrad, 1831</small>
- Lyonsia kawamurai <small> Habe, 1952</small>
- Lyonsia malvinensis <small> d'Orbigny, 1846</small>
- Lyonsia norvegica <small>(J.F. Gmelin, 1791)</small>
- Lyonsia nuculaniformis <small> Scarlato, 1981</small>
- Lyonsia panamensis <small> Dall, 1908</small>
- Lyonsia praetenuis <small> Dunker, 1882</small>
- Lyonsia shimkevitch <small> (M. Sars, 1868)</small>
- Lyonsia striata <small>(Montagu, 1815) </small>
- Lyonsia taiwanica <small> Lan & Okutani, 2002</small>
- Lyonsia ventricosa <small> Gould, 1861</small>
- Lyonsia vniroi <small> Scarlato, 1981</small>
References