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Pseudolingula pseudoquadrata

Lingulata - Lingulida - Pseudolingulidae

Taxonomy
Lingula pseudoquadrata was named by Reed (1917).

It was recombined as Pseudolingula pseudoquadrata by Williams (1962).

Sister species lacking formal opinion data

View classification of included taxa

Synonymy list
YearName and author
1917Lingula pseudoquadrata Reed p. 806 figs. pl. ii, figs. 17, 18
1962Pseudolingula pseudoquadrata Williams p. 83 figs. P1. VI, figs. 15, 19

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Eutriploblastica
Neotriploblastica
Eucoelomata
superphylumLophotrochozoa
Lophophorata
phylumBrachiopodaCuvier 1805
RankNameAuthor
subphylumLinguliformeaWilliams et al. 1996
classLingulataGorjansky and Popov 1985
orderLingulidaWaagen 1885
superfamilyLinguloideaMenke 1828
familyPseudolingulidae
genusPseudolingulaMickwitz 1909
speciespseudoquadrata()

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
A. Williams 1962Lustrous brown and cream-coloured, subpentagonal Pseudolingula with obtusely outlined inconspicuous beaks, truncated anterior margin and postero-lateral shoulders steeply sloping from a pair of divergent low "plicae" which flank a broad indistinct median "sulcus"; pedicle valve almost threequarters as wide as long; ornamentation consisting of irregularly spaced concentric growth-lamellae; ventral interior with a pair of umbonal muscle-scars deeply impressed in a thickened posterior platform which passes anteriorly into a low median septum about five-sixths as long as the valve.