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Pseudoantiquatonia
Taxonomy
Pseudoantiquatonia was named by Zhan and Wu (1982). It is not extant. Its type is Pseudoantiquatonia mutabilis.
It was assigned to Tyloplectini by Williams et al. (2000) and Angiolini (2001); to Dictyoclostinae by Shi and Shen (2001); and to Strophomenida by Sepkoski (2002).
It was assigned to Tyloplectini by Williams et al. (2000) and Angiolini (2001); to Dictyoclostinae by Shi and Shen (2001); and to Strophomenida by Sepkoski (2002).
Species
P. mutabilis (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1982 | Pseudoantiquatonia Zhan and Wu |
| 2000 | Pseudoantiquatonia Williams et al. p. 488 |
| 2001 | Pseudoantiquatonia Angiolini p. 318 |
| 2001 | Pseudoantoquatonia Shi and Shen pp. 244 - 246 |
| 2002 | Pseudoantoquatonia 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. †Pseudoantiquatonia Zhan and Wu 1982
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†Pseudoantiquatonia mutabilis Zhan and Wu 1982
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| G. R. Shi and S. Shen 2001 | Average size for Dictyoclostinae; visceral region triangular, hinge narrow; ears small, well demarcated from visceral disc by a groove; corpus moderately deep; trail relatively long; umbonal area with somewhat pustular appearance, but gradually replaced by costae anteriorly; halteroid spines suberect, scattered over shell, but evidently becoming more numerous on anterior part of the trail; a row of spines present on umbonal slopes; sulcus generally weak, commencing from the anterior part of the visceral disc, broad and shallow over the geniculation area, ill-de®ned on trail. Dorsal valve lacks spines. Dorsal interior with trilobate cardinal process and a prominent median septum, extending over half of the visceral disc; details of muscle ®eld unknown. |