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Rhaptagnostus bifax
Taxonomy
Pseudagnostus bifax was named by Shergold (1975). It is not extant.
It was recombined as Rhaptagnostus bifax by Shergold (1977).
It was recombined as Rhaptagnostus bifax by Shergold (1977).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1975 | Pseudagnostus bifax Shergold |
| 1977 | Rhaptagnostus bifax Shergold |
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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.
†Rhaptagnostus bifax Shergold 1975
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, f = family, o = order | |||||
| References: Hendy 2009, Kiessling 2004 | |||||
Age range: base of the Aksaian to the top of the Batyrbaian or 492.80000 to 485.40000 Ma
Collections (10 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Taoyuanian | China (Hunan) | Rhaptagnostus bifax (126722) | |
| Aksaian | Kazakhstan | Rhaptagnostus bifax (118481 118485 118486 118487 118872 118876 118881 118885) | |
| Batyrbaian | Kazakhstan | Rhaptagnostus bifax (118893) |