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Leptoskelidion

Rhynchonellata - Orthida - Linoporellidae

Taxonomy
Leptoskelidion was named by Amsden (1974) [Sepkoski's age data: O Ashg-u S Ldov-l Sepkoski's reference number: 764]. Its type is Leptoskelidion septulosum.

It was assigned to Linoporellidae by Amsden (1974) and Williams et al. (2000); and to Orthida by Sepkoski (2002).

Synonymy list
YearName and author
1974Leptoskelidion Amsden pp. 47 - 48
2000Leptoskelidion Williams et al. p. 838
2002Leptoskelidion Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Eutriploblastica
Neotriploblastica
Eucoelomata
superphylumLophotrochozoa
Lophophorata
phylumBrachiopodaCuvier 1805
RankNameAuthor
subphylumRhynchonelliformeaWilliams et al. 1996
classRhynchonellataWilliams et al. 1996
orderOrthidaSchuchert and Cooper 1932
suborderDalmanellidinaMoore 1952
superfamilyEnteletoideaWaagen 1884
familyLinoporellidaeSchuchert and Cooper 1931
genusLeptoskelidion

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Diagnosis
ReferenceDiagnosis
T. W. Amsden 1974Biconvex shells with faint, obscure costellae. The ventral teeth are supported on dental plates that extend forward to encircle the elliptical muscle field. In the dorsal valve the expanded brachiophore bases unite with the median ridge to make a sessile cruralium. The cardinal process has a linear shaft that expands at its posterior end into a bulbous myophore. The shell substance is presumably punctate.