Brachiopoda : Liothyrella

Liothyrella


Sous-embranchement (subphylum) des Rhynchonelliformea Classe des Rhynchonellata Ordre des Terebratulida Sous-ordre des Terebratulidina Super-famille des Terebratuloidae Super-famille des Dyscolioidae Super-famille des Cancellothyroidea

Genus Liothyrella Thomson, 1916

[= Dolichosina Cooper, 1983; Mimorina Cooper, 1983]
[Type species = Terebratula uva Broderip, 1833 (p. 124)]

Large to very large, elongate oval to subcircular; ventribiconvex, anterior commissure usually rectimarginate, occasionally broadly uniplicate; smooth or with faint, radial or zigzag capillae; beak usually short, suberect; foramen usually large, submesothyrid, labiate; symphytium wholly or partly visible; pedicle collar short, teeth triangular, narrow; low myophragm may be present; cardinal process transverse semiellipse; outer hinge plates variable in width and length; attached near dorsal edge of crural bases; loop variable; usually widely triangular, crural processes located near socket openings, transverse band relatively narrow, variable; spicules abundant.

Eocene - Present

Diagnosis from volume 5 of the
Treatise on Invertebrate Paleontology (2006)

Extant Species of Liothyrella

L. uva (Broderip, 1833)

L. moseleyi (Davidson, 1878)

L. winteri (Blochmann, 1906)

L. neozelanica Thomson, 1918

L. multiporosa Foster, 1974

L. delsolari Cooper, 1982

Diagnosis
Diagnosis
Diagnosis
Diagnosis

Diagnosis

FIGURES : Liothyrella

Geographic distribution

Liothyrella uva (Broderip, 1833) Type locality: “in sinu Tehuantepec” - “found by Captain Dare, attached to a sea-vorn bivalve, at a depth of 10-12fathoms”. Depth range: 0 - 2273 m Terebratula uva Broderip, 1833 Liothyris uva Davidson, 1886 ?Terebratula uva Gray, 1853 Terebratula moseleyi Fischer & Œhlert, 1892 Liothyrella antarctica Blochmann, 1906 Liothyrina uva Blochmann, 1906 Liothyrina moseleyi Dall, 1908 Liothyrina uva var. notorcadensis Jakson, 1912 Liothyrina antarctica Joubin, 1914 ?Liothyrella ovata Thomson, 1918 Liothyrella notorcadensis Thomson, 1918 Gryphus antarcticus Dall, 1920 Gryphus uva Dall, 1921 Liothyrella oblonga Cooper, 1973 Liothyrella antartica georgina Zezina 1980 Liothyrella "uva" Cooper, 1983 Liothyrella uva georgina Foster, 1974 Liothyrella uva notorcadensis Foster, 1974 Liothyrella uva cancerderma Foster, 1974 Liothyris uva Zezina, 1976 Liothyrella georgina Cooper, 1982 Liothyrella fosteri Cooper, 1982 Liothyrella expansa Cooper, 1982 Liothyrella notocadensis Cooper, 1982 Diagnose in preparation -
Liothyrella moseleyi (Davidson, 1878) Type locality: West of Kergelen Island, 210 fathoms [46°47'S, 51° 37’E, depth 384 m] Depth range: some meters - 700 m Terebratula moseleyi Davidson, 1878 Liothyris moseleyi Davidson, 1886 Terebratula (Liothyrina) moseleyi Davidson, 1892 Liothyrina moseleyi Blochmann, 1906 Liothyrella moseleyi Hertlein & Grant, 1944 Diagnosis - in preparation
Liothyrella winteri (Blochmann, 1906) Type locality: “Valdivia, Station 165, St. Paul Tiefe 680 m [38°40,0'S, 77°38,6'E, depth 672 m, NE of Saint-Paul Island, Valdivia-Expedition, 1898-1899]. Depth range: 672 - 680 m Liothyrina winteri Blochmann, 1906 Liothyrella winteri Thomson, 1927 Diagnosis - in preparation
Liothyrella neozelanica Thomson, 1918 Type locality: Cook Strait, off Wellington, 370 m Depth range: 6 - 1939 m Liothyrina sp. Jackson, 1918 Liothyris neozelanica Zezina, 1976 Diagnosis - in preparation Should be added: Muscle disposition: see Fig. in front -	Disposition of the pedicle and pedicles muscles - sagittal section (from Richardson, 1979) Muscle attachment (from Richardson, 1979)
L. delsolari Cooper, 1982 Type locality: off Peru [4°00'S, 80°30'W] Depth range: 760 - 1208 m Diagnosis - in preparation