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Giraldiella

Rhynchonellata - Orthida - Giraldiellidae

Taxonomy
Giraldiella was named by Williams (1951) [Sepkoski's age data: O Llde-u S Ldov-u Sepkoski's reference number: 25,1075. Bancroft in Williams 1951.]. Its type is Orthis protensa. It is the type genus of Giraldiellidae.

It was assigned to Plectorthidae by Williams (1951); to Giraldiellidae by Williams et al. (2000); and to Orthida by Sepkoski (2002).

Synonymy list
YearName and author
1951Giraldiella Williams pp. 91 - 92
2000Giraldiella Williams et al. p. 771
2002Giraldiella 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
suborderOrthidinaSchuchert and Cooper 1932
superfamilyPlectorthoideaSchuchert and Le Vene 1929
familyGiraldiellidae
genusGiraldiella

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 1951Multicostellate subequally convex or resupinate orthids with the dorsal valve more convex than the ventral. Internally with a plectorthid cardinalia except for a linear cardinal process, and a short undifferentiated