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Plectambonites etheridgei

Strophomenata - Strophomenida - Plectambonitidae

Taxonomy
Leptaena etheridgei was named by Davidson (1883) [Leptaena Etheridgei].

It was recombined as Plectambonites etheridgei by Reed (1917); it was recombined as Bilobia etheridgei by Williams (1962), Mitchell (1977) and Candela and Harper (2014).

Synonymy list
YearName and author
1883Leptaena etheridgei Davidson p. 170 figs. pl. xii, figs. 11, 12
1917Plectambonites etheridgei Reed pp. 875 - 876 figs. Plate XIII, figs. 27-31
1962Bilobia etheridgei Williams p. 168 figs. PI. XV, figs. 30, 31, 33-36
1977Bilobia etheridgei Mitchell
2014Bilobia etheridgei Candela and Harper pp. Supplement 1

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Eutriploblastica
Neotriploblastica
Eucoelomata
superphylumLophotrochozoa
Lophophorata
phylumBrachiopodaCuvier 1805
RankNameAuthor
subphylumRhynchonelliformeaWilliams et al. 1996
classStrophomenataWilliams et al 1996
orderStrophomenidaOpik 1934
superfamilyPlectambonitoideaJones 1928
familyPlectambonitidaeKozlowski 1929
subfamilyPlectambonitinaeJones 1928
genusPlectambonitesPander 1830
speciesetheridgei(Davidson 1883)

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 1962Elongately semi-oval Bilobia, two-thirds as long as wide and strongly concavo-convex with the pedicle valve just over one-half as deep as long; ornamentation differentially parvicostellate with a sublateral pair of costae especially conspicuous, concentric lamellae excessively developed anteriorly; ventral muscle-scar about one-third as long as the pedicle valve and nearly four-fifths as long as wide; lophophore platform not well known, but undoubtedly elongately bilobed with a median septum lying in the cleft, and commonly with rounded frontal margins.