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Giraldiella
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).
It was assigned to Plectorthidae by Williams (1951); to Giraldiellidae by Williams et al. (2000); and to Orthida by Sepkoski (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1951 | Giraldiella Williams pp. 91 - 92 |
| 2000 | Giraldiella Williams et al. p. 771 |
| 2002 | Giraldiella Sepkoski |
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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.
G. †Giraldiella Williams 1951
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†Giraldiella giraldi Williams 1951
†Giraldiella protensa de Sowerby 1839
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Invalid names: Giraldiella lata de Sowerby 1839 [synonym]
†Giraldiella subsilurica Marek and Havlíček 1967
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. Williams 1951 | Multicostellate 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 |