Pseudoasaphus fossil map
Where fossils of Pseudoasaphus have been found, shown on the Earth as it looked about 470 million years ago and on today’s map.
Dots are fossil collections recorded in the Paleobiology Database. The “then” view moves today’s fossil sites back to their positions 470 million years ago (the time slice nearest the median age of the fossils) using the Merdith et al. (2021) plate model; positions are approximate. Open on the timeline map →

| Group | Trilobites & sea scorpions |
|---|---|
| Lived | 477.1–455 million years ago (Floian to Sandbian) |
| Periods | Ordovician |
| Family | Asaphidae |
| Named by | Schmidt 1901 |
| Fossil records | 23 occurrences at 17 locations (PBDB) |
| Found in | Norway, Sweden, China, Iran, Estonia |
| Rock formations | Vollen, Segerstad Limestone, Elnes, Dalby, Persnas, Folkeslunda |
About Pseudoasaphus
Pseudoasaphus is an extinct genus of trilobites from the Ordovician.
Text in “About” is quoted from the Wikipedia article Pseudoasaphus (revision 1321968933), licensed under CC BY-SA 4.0; introduction excerpted verbatim, formatting removed. Ages, family, authority and fossil records: Paleobiology Database, accessed 23 October 2026. Ages are those of the rock layers the fossils were found in. Wikidata: Q21229485.