Amphiaspidida is a taxon of extinct cyathaspidid heterostracan agnathans whose fossils are restricted to Lower Devonian marine strata of Siberia near...
5 KB (460 words) - 04:20, 27 February 2023
Cyathaspidiformes (section Amphiaspidida)
three families, Cyathaspidae, Ctenaspidae, and Ariaspidae. The suborder Amphiaspidida, traditionally thought of as the daughter or sister-taxon of Ctenaspididae/Ctenaspidae...
6 KB (579 words) - 01:38, 8 January 2024
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...
2 KB (143 words) - 22:19, 1 October 2023
Nakaolinaspis？ Cyathaspidida Amphiaspidida...
5 KB (332 words) - 15:33, 22 November 2023
Amphiaspididae (category Amphiaspidida)
and a simple, slit-like mouth. Amphiaspis argo is the type species of Amphiaspidida, and is known from an incomplete set of pillow-shaped cephalothoracic...
2 KB (164 words) - 01:30, 2 March 2023
Eglonaspididae (category Amphiaspidida)
Pteraspidomorphi Subclass: Heterostraci Order: Cyathaspidiformes (unranked): Amphiaspidida Superfamily: Hibernaspidoidei Family: Eglonaspididae Genera Eglonaspis...
4 KB (433 words) - 00:40, 2 December 2022
Hibernaspis (category Amphiaspidida)
Chordata Class: Pteraspidomorphi Order: Cyathaspidiformes (unranked): Amphiaspidida Superfamily: Hibernaspidoidei Family: Hibernaspididae Genus: Hibernaspis...
2 KB (199 words) - 09:44, 1 March 2021
cyathaspidiform heterostracan agnathans in the suborder Cyathaspidida. If Amphiaspidida can be ignored as a daughter-taxon, the family Ctenaspidae contains...
1 KB (77 words) - 01:11, 23 August 2022
including Anglaspis, Listraspis, Liliaspis, and Paraliliaspis. If Amphiaspidida can be ignored as a daughter-taxon, the family Ctenaspidae contains...
4 KB (312 words) - 10:01, 1 March 2021
Nakaolinaspis？ Cyathaspidida Amphiaspidida...
6 KB (623 words) - 12:39, 4 July 2023
basal forms. Cyathaspidiformes is divided into two main subgroups: the Amphiaspidida of Early Devonian Siberia (i.e., Amphiaspis, Gabreyaspis, and Edaphaspis...
6 KB (517 words) - 17:40, 4 February 2024
Amphoraspis (category Amphiaspidida)
Pteraspidomorphi Subclass: Heterostraci Order: Cyathaspidiformes (unranked): Amphiaspidida Superfamily: Amphiaspidoidei Family: Amphiaspididae Genus: Amphoraspis...
2 KB (177 words) - 21:29, 29 June 2022
Edaphaspis (category Amphiaspidida)
Pteraspidomorphi Subclass: Heterostraci Order: Cyathaspidiformes (unranked): Amphiaspidida Superfamily: Amphiaspidoidei Family: Edaphaspididae Novitskaya, 1968...
2 KB (166 words) - 09:43, 1 March 2021
Gabreyaspididae (category Amphiaspidida)
Pteraspidomorphi Subclass: Heterostraci Order: Cyathaspidiformes (unranked): Amphiaspidida Superfamily: Amphiaspidoidei Family: Gabreyaspididae Genera Gabreyaspis...
3 KB (307 words) - 09:20, 1 March 2021
Olbiaspididae (category Amphiaspidida)
Pteraspidomorphi Subclass: Heterostraci Order: Cyathaspidiformes (unranked): Amphiaspidida Superfamily: Amphiaspidoidei Family: Olbiaspididae Genera Olbiaspis...
3 KB (289 words) - 09:20, 1 March 2021
Amphiaspidoidei (category Amphiaspidida)
Pteraspidomorphi Subclass: Heterostraci Order: Cyathaspidiformes (unranked): Amphiaspidida Superfamily: Amphiaspidoidei Families Amphiaspididae Edaphaspididae...
2 KB (172 words) - 01:12, 23 August 2022
Siberiaspidoidei (category Amphiaspidida)
Pteraspidomorphi Subclass: Heterostraci Order: Cyathaspidiformes (unranked): Amphiaspidida Superfamily: Siberiaspidoidei Families Siberiaspididae Tuxeraspididae...
3 KB (237 words) - 00:39, 6 September 2022
Hibernaspidoidei (category Amphiaspidida)
Pteraspidomorphi Subclass: Heterostraci Order: Cyathaspidiformes (unranked): Amphiaspidida Superfamily: Hibernaspidoidei Families Hibernaspididae Eglonaspididae...
2 KB (175 words) - 18:18, 25 August 2023
Amphiaspis (category 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...
2 KB (190 words) - 21:29, 29 June 2022