Grossaspis fossil map
Where fossils of Grossaspis have been found, shown on the Earth as it looked about 420 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 420 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 | Ancient fish & sharks |
|---|---|
| Lived | 410.62–399.5 million years ago (Emsian) |
| Periods | Devonian |
| Family | Pterichthyodidae |
| Named by | White and Moy-Thomas 1940 |
| Fossil records | 1 occurrences at 1 locations (PBDB) |
| Found in | Germany |
| Rock formations | Hunsruck Slate |
About Grossaspis
Grossaspis is a monotypic genus of antiarch placoderms known from the Givetian age of Eifel, Germany. It is represented by the single species, Grossaspis carinata. They were likely marine bottom feeders, characterized by a steep dorsal crest and a greatly inclined head.
Text in “About” is quoted from the Wikipedia article Grossaspis (revision 1359712881), 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: Q132096014.