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Paratretaspis
Taxonomy
Paratretaspis was named by Dean (1973) [Sepkoski's age data: O Llvi-l Sepkoski's reference number: 795]. It is not extant.
It was assigned to Ptychopariida by Sepkoski (2002); and to Trinucleidae by Jell and Adrain (2002).
It was assigned to Ptychopariida by Sepkoski (2002); and to Trinucleidae by Jell and Adrain (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1973 | Paratretaspis Dean |
| 2002 | Paratretaspis Jell and Adrain p. 422 |
| 2002 | Paratretaspis 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. †Paratretaspis Dean 1973
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Diagnosis
No diagnoses are available