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Anarhynchia
Taxonomy
Anarhynchia was named by Ager (1968) [Sepkoski's age data: J Call Sepkoski's reference number: 538].
It was assigned to Rhynchonellininae by Ager (1968); to Peregrinelloideidae by Williams et al. (2002); and to Rhynchonellida by Sepkoski (2002).
It was assigned to Rhynchonellininae by Ager (1968); to Peregrinelloideidae by Williams et al. (2002); and to Rhynchonellida by Sepkoski (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1968 | Anarhynchia Ager p. 63 figs. Pl. 1, figs. 4a-c |
| 2002 | Anarhynchia Sepkoski |
| 2002 | Anarhynchia Williams et al. p. 1243 |
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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. †Anarhynchia Ager 1968
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†Anarhynchia gabbi Ager 1968
†Anarhynchia smithi Pálfy et al. 2017
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. Ager 1968 | Large subcircular to trans-versely elliptical rhynchonelloids, almost equally biconvex, dorsal valve slightly flattened posteriorly, beak fairly prominent with large mesothyrid pedicle opening. Many strong blunt costae on both valves throughout growth. Teeth very small, arising directly from valve wall, no dental plates. Hinge-plates fused, no septalium. Large blade-like septifer crura arise directly from close parallel septa in the dorsal valve. |