Definition of Amphiaspidida. Meaning of Amphiaspidida. Synonyms of Amphiaspidida

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Definition of Amphiaspidida

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Meaning of Amphiaspidida from wikipedia

- Amphiaspidida is a taxon of extinct cyathaspidid heterostracan agnathans whose fossils are restricted to Lower Devonian marine strata of Siberia near...
- three families, Cyathaspidae, Ctenaspidae, and Ariaspidae. The suborder Amphiaspidida, traditionally thought of as the daughter or sister-taxon of Ctenaspididae/Ctenaspidae...
- Nakaolinaspis？ Cyathaspidida Amphiaspidida...
- basal forms. Cyathaspidiformes is divided into two main subgroups: the Amphiaspidida of Early Devonian Siberia (i.e., Amphiaspis, Gabreyaspis, and Edaphaspis...
- Nakaolinaspis？ Cyathaspidida Amphiaspidida...
- cyathaspidiform heterostracan agnathans in the suborder Cyathaspidida. If Amphiaspidida can be ignored as a daughter-taxon, the family Ctenaspidae contains...
- dorsal shield is flat. "Palaeos Vertebrates 40.500  Pteraspidomorphi: Amphiaspidida". 2008-03-19. Archived from the original on 2008-03-19. Retrieved 2022-07-05...
- Nakaolinaspis？ Cyathaspidida Amphiaspidida...
- Amphiaspis argo is the type species of the cyathaspidid taxon Amphiaspidida, and of the family Amphiaspididae. Its fossils are restricted to early Emsian-aged...
- Nakaolinaspis？ Cyathaspidida Amphiaspidida...