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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Psammosteus praecursor
Taxonomy
Psammosteus praecursor was named by Obruchev (1947).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1947 | Psammosteus praecursor Obruchev |
| 2007 | Psammosteus praecursor Moloshnikov p. 561 |
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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.
†Psammosteus praecursor Obruchev 1947
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: subp = subphylum, p = phylum | |||||
| References: Carroll 1988, Kiessling 2004 | |||||
Age range: base of the Late/Upper Givetian to the top of the Early/Lower Frasnian or 383.40000 to 379.00000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Givetian | Belarus | Psammosteus praecursor (225888) | |
| Early/Lower Frasnian | Russian Federation | Psammosteus praecursor (90343) |