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Placocliftonia

Rhynchonellata - Orthida - Oxopleciidae

Taxonomy
Placocliftonia was named by Havlicek and Storch (1990) [Havlicek in Havlicek & Storch 1990].

It was assigned to Oxopleciidae by Havlicek and Storch (1990).

Synonymy list
YearName and author
1990Placocliftonia Havlicek and Storch p. 60

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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
suborderOrthidinaSchuchert and Cooper 1932
superfamilyTriplesiaceaSchuchert 1913
familyOxopleciidae
genusPlacocliftonia

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
V. Havlicek and P. Storch 1990Shell tripartite, of spiriferid appearance, with a deep ventral sulcus and a narrow, highly elevated dorsal fold. Ribs rounded, usually simple, exceptionally bifurcating, crossed by concentric rugellae strongly swollen on tops of the ribs, and extending anteriorly into short spines. Pseudodeltidium flat, devoid of the median ridge; edge of the palintrope straight, tightly fitting against the hinge of the brachial valve. Dental plates absent; short pedicle tube and bifurcating cardinal process as in Clrftonia FoERSTE