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Tibetatrypa
Taxonomy
Tibetatrypa was named by Copper and Hou (1986) [Sepkoski's age data: D Sieg-u D Emsi-l]. Its type is Tibetatrypa xainzaensis.
It was assigned to Atrypida by Sepkoski (2002); and to Clintonellinae by Copper and Hou (1986), Williams et al. (2002).
It was assigned to Atrypida by Sepkoski (2002); and to Clintonellinae by Copper and Hou (1986), Williams et al. (2002).
Species
T. xainzaensis (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1986 | Tibetatrypa Copper and Hou pp. 287 - 289 |
| 2002 | Tibetatrypa Sepkoski |
| 2002 | Tibetatrypa Williams et al. p. 1425 |
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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. †Tibetatrypa Copper and Hou 1986
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†Tibetatrypa xainzaensis Copper and Hou 1986
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| P. Copper and H,-F. Hou 1986 | Diagnosis. -Large, ovoid and rotund, biconvex to dorsibiconvex shells with strongly incurved, hypercline beak, no foramen, weakly uniplicate to rectimarginate fold, ribbing, no growth lamellae or frills. Ventral valve with small and rounded dental cavities, lacking true dental plates, dorso-ventral teeth. Brachial valve aseptate, socket plates thin, small crural bases, short and fibrous crura, jugal processes separated, tapering to delicate laterally twisted plates. Spiralia dorsally directed, with numerous coils (Figure 3). |