| Errivaspis | |
|---|---|
 | |
Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Infraphylum: | Agnatha |
| Class: | †Pteraspidomorpha |
| Subclass: | †Heterostraci |
| Order: | †Pteraspidiformes |
| Family: | †Pteraspididae |
| Genus: | †Errivaspis Blieck, 1984 |
| Type species | |
| Pteraspis rostrata var. waynensis White, 1935 | |
| Species | |
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| Synonyms | |
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Errivaspis is anextinctgenus ofpteraspidheterostracanagnathanvertebrate known from fossils at the Wayne Hereford Quarry, ofEarly DevonianEngland, and ofPodolia, Early DevonianUkraine. It was originally described by Dr. Errol Ivor White as one of five form-variants ofPteraspis rostrata, i.e., "Pteraspis rostrata var. waynesis.[1] In 1984, Alain Blieck movedvar. waynesis into its own genus,Errivaspis, which he named after Dr. White.[1][2] Other later researchers would then mistakenly assume that Bliecksynonymized the entire genus ofPteraspis intoErrivaspis.
Errivaspis had large dorsal plates and ventral plates, the linkingbranchial plate, as well as a cornual plate at the side, anorbital plate around the eye. Arostral plate formed a pointed ‘snout’, several small plates around the mouth, and a dorsal spine pointing backwards. The posterior half of the body was covered with smallscales. The caudal fin was fan-shaped.
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