Amphoraspis
| Amphiaspis argo Temporal range: Early Devonian | |
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| Amphoraspis stellata reconstruction | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Pteraspidomorphi |
| Subclass: | Heterostraci |
| Order: | Cyathaspidiformes |
| (unranked): | Amphiaspidida |
| Superfamily: | Amphiaspidoidei |
| Family: | Amphiaspididae |
| Genus: | Amphoraspis |
| Species: | A. stellata |
| Binomial name | |
| Amphoraspis stellata | |
Amphoraspis stellata is an amphiaspidid heterostracan in the family Amphiaspididae. Its fossils are restricted to early Devonian-aged marine strata of the Taimyr Peninsula, Siberia. A. stellata, as with all other amphiaspidids, is thought to have been a benthic filter feeder that lived on top of, or buried just below the surface of the substrate of hypersaline lagoon-bottoms.
So far, A. stellata is known from at least one, 14 centimeter-long, broad and rounded cephalothoracic armor that is shaped vaguely like an urn or vase. The animal had small, possibly degenerate eyes that were flanked laterally by a small, crescent-shaped branchial opening. The small eyes, in turn, laterally flank a small, slit-shaped mouth at the center of the anterior-most end of the cephalothorax. The external surface of the armor has a unique micro-ornamentation of a pattern of star-like shapes.