Definition of Anchipteraspidids. Meaning of Anchipteraspidids. Synonyms of Anchipteraspidids

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Definition of Anchipteraspidids

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Meaning of Anchipteraspidids from wikipedia

- restricted to Late Silurian and Early Devonian strata of Arctic Canada. Anchipteraspidids superficially resemble the ancestral cyathaspidids, but, the articulation...
- Silurian Canada. The armor of anchipteraspidids superficially resemble those of cyathaspidids, though, anchipteraspidids already have the typical series...
- protaspidids are actually highly derived pteraspidids, and that the anchipteraspidids, the most primitive of pteraspidids, are the sister-group of the psammosteids...
- (comprising Pteraspididae, Gigantaspis and Protaspididae), and the anchipteraspidids and the Psammosteids. Protopteraspids are found in Lower Devonian...