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Perakaspis
Taxonomy
Perakaspis was named by Kobayashi and Hamada (1972) [Sepkoski's age data: D Emsi-u D Eife Sepkoski's reference number: 421,1106]. It is not extant. Its type is Perakaspis trapezoidalis.
It was assigned to Proetida by Sepkoski (2002); and to Tropidocoryphidae by Jell and Adrain (2002).
It was assigned to Proetida by Sepkoski (2002); and to Tropidocoryphidae by Jell and Adrain (2002).
Species
P. (Bailielloides), P. trapezoidalis (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1972 | Perakaspis Kobayashi and Hamada |
| 2002 | Perakaspis Jell and Adrain p. 423 |
| 2002 | Perakaspis 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. †Perakaspis Kobayashi and Hamada 1972
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Subg. †Perakaspis (Bailielloides) Kobayashi and Hamada 1972
†Perakaspis trapezoidalis Kobayashi and Hamada 1972
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| References: Fortey and Owens 1999, Aberhan et al. 2004 | |||||
Collections
No collection or age range data are available