Английская Википедия:Errivaspis
Шаблон:Short description Шаблон:Italic title Шаблон:Automatic taxobox
Errivaspis is an extinct genus of pteraspid heterostracan agnathan vertebrate known from fossils at the Wayne Hereford Quarry, of Early Devonian England, and of Podolia, Early Devonian Ukraine. It was originally described by Dr. Errol Ivor White as one of five form-variants of Pteraspis rostrata, i.e., "Pteraspis rostrata var. waynesis.[1] In 1984, Alain Blieck moved var. waynesis into its own genus, Errivaspis, which he named after Dr. White.[1][2] Other later researchers would then mistakenly assume that Blieck synonymized the entire genus of Pteraspis into Errivaspis.
Description
Errivaspis had large dorsal plates and ventral plates, the linking branchial plate, as well as a cornual plate at the side, an orbital plate around the eye. A rostral 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 small scales. The caudal fin was fan-shaped.
References
- Michael J. Benton, "Vertebrate Palaeontology" 3rd Edition, p. 48 - 49 (Blackwell Publishing, 2005)
Шаблон:Pteraspidomorphi-stub
Шаблон:Devonian-jawless-fish-stub
- ↑ 1,0 1,1 Шаблон:Cite book
- ↑ Blieck, Alain. "Les Hétérostracés Ptéraspidiformes, Agnathes du Silurien-Dévonien du Continent nord-atlantique et des blocs avoisinants: révision systématique, phylogénie, biostratigraphie, biogéographie." (1984).
