| Cyathaspidida Temporal range:
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|---|---|
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| Cyathaspis banksii reconstruction | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Infraphylum: | Agnatha |
| Class: | †Pteraspidomorphi |
| Subclass: | †Heterostraci |
| Order: | †Cyathaspidiformes |
| Clade: | †Cyathaspidida |
| Families | |
Cyathaspidida is a taxon of extinct cyathaspidiform heterostracan agnathans whose fossils are found in Silurian to Lower Devonian marine strata of Europe and North America.[1] In life, they are thought to be benthic animals that lived most of their lives either mostly buried in or resting directly on top of the substrate.
- ^ Lundgren, Mette, and Henning Blom. "Phylogenetic relationships of the cyathaspidids (Heterostraci)." GFF 135.1 (2013): 74-84.