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Ptychagnostus affinis
Taxonomy
Agnostus affinis was named by Brøgger (1878).
It was recombined as Ptychagnostus (Ptychagnostus) affinis by Westrop et al. (1996); it was recombined as Ptychagnostus affinis by Peng and Robison (2000); it was recombined as Ptychagnostus affinis by Peng and Robison (2000).
It was recombined as Ptychagnostus (Ptychagnostus) affinis by Westrop et al. (1996); it was recombined as Ptychagnostus affinis by Peng and Robison (2000); it was recombined as Ptychagnostus affinis by Peng and Robison (2000).
Synonymy list
| Year | Name and author |
|---|---|
| 1878 | Agnostus affinis Brøgger |
| 1996 | Ptychagnostus (Ptychagnostus) affinis Westrop et al. p. 808 |
| 2000 | Ptychagnostus affinis Peng and Robison |
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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.
†Ptychagnostus affinis Brøgger 1878
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Diagnosis
No diagnoses are available