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Aenigmastrophia
Taxonomy
Aenigmastrophia was named by Boucot (1971) [Sepkoski's age data: S Ludl Sepkoski's reference number: 25]. Its type is Aenigmastrophia cooperi. It is the type genus of Aenigmastrophiidae.
It was assigned to Strophomenida by Boucot (1971) and Sepkoski (2002); and to Aenigmastrophiidae by Williams et al. (2002).
It was assigned to Strophomenida by Boucot (1971) and Sepkoski (2002); and to Aenigmastrophiidae by Williams et al. (2002).
Species
A. cooperi (type species), A. greggi
Synonymy list
| Year | Name and author |
|---|---|
| 1971 | Aenigmastrophia Boucot p. 156 |
| 2002 | Aenigmastrophia Sepkoski |
| 2002 | Aenigmastrophia Williams et al. p. 1002 |
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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. †Aenigmastrophia Boucot 1971
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†Aenigmastrophia cooperi Boucot 1971
†Aenigmastrophia greggi Boucot 1971
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. J. Boucot 1971 | The unique features of this genus are a combination of gently concavoconvex cross section, laterally elongate strophic outline, and a relatively smooth exterior associated with a laterally directed, narrow pair of cardinal process lobes 1 flanking a vari¬ ably developed ridgelike median septum in the brachial valve and a raised pedicle callist area in the posterior portion of the pedicle valve flanked by a pair of elongate, anterolaterally directed hinge-teeth. |