Family LINGULIDAE Menke, 1828

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Introduction

For ecology, geographic distribution, morphology, anatomy and systematics, see Emig (1979, 1982).

Occurence: ?Upper Devonian, Carboniferous to Recent.

Diagnosis

Elongate oval to spatulate in outline, beak of pedicle valve with broad triangular ventral depression of groove for passage of pedicle. Posteriolateral margins of valve thickened, striated, lacking flexure lines, but rarely forming well-defined triangular propareas. Beak of brachial valve with small, uninterupted pseudointerarea, not extending as a plate into the valve. Principal musculature consisting of umbonal muscle, paired centrals, transmedians, anterior, outsiode and middle laterals. One pair of principal mantle canals in each valve. Recent species with long, flexible pedicle lophophore spirolophous, apices of spires medianly directed. From Moore (1965: H262).

Diagnosis References

Moore, R.C. 1965. Treatise on Invertebrate Paleontology. Part H. Brachiopoda. New York : The Geological Society of America, Inc. and The University of Kansas Press Vol. 1 pp. i-xxxii, H1-H521. [H262]

General References

Emig, C.C. 1979. Three species of Lingula from the Queensland Coast. Memoirs of the Queensland Museum 19(3): 381-391

Emig, C.C. 1982. Taxonomie du genre Lingula (Brachiopodes, Inarticul). Bulletin du Muséum d'Histoire Naturelle. Paris [published 1895-1906] 4 4(3-4): 337-367

Moore, R.C. 1965. Treatise on Invertebrate Paleontology. Part H. Brachiopoda. New York : The Geological Society of America, Inc. and The University of Kansas Press Vol. 1 pp. i-xxxii, H1-H521.

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