Panxiosteus Temporal range:
Middle Devonian:
Givetian,
| |
---|---|
Scientific classification
![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | † Placodermi |
Order: | † Arthrodira |
Suborder: | † Brachythoraci |
Family: | † Panxiosteidae |
Genus: | †
Panxiosteus Wang, 1979 |
Type species | |
Panxiosteus oculus Wang, 1979
|
Panxiosteus is an extinct monospecific genus of placoderm arthrodire from the Middle Devonian: Givetian stage of Yunnan province, China.
Panxiosteus is a member of Panxiosteidae. In the 2010 Carr & Hlavin phylogenetic study, Panxiosteidae was recognized as the sister taxon to the family Dunkleosteidae, which together comprised the superfamily Dunkleosteoidea (one of the three major clades of Eubrachythoraci). [1] The phylogeny of Panxiosteus within Panxiosteidae is shown in the cladogram below from the 2013 Zhu & Zhu study: [2]
Eubrachythoraci |
|
Pachyosteomorphi | |||||||||||||||||||||||||||||||||
However, the subsequent 2016 Zhu et al. study using a larger morphological dataset recovered Panxiosteidae well outside of Dunkleosteoidea, instead within Coccosteomorphi and then Coccosteoidea as the sister group of Coccosteidae, as shown in the cladogram below: [3]
Eubrachythoraci | |
Panxiosteus Temporal range:
Middle Devonian:
Givetian,
| |
---|---|
Scientific classification
![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | † Placodermi |
Order: | † Arthrodira |
Suborder: | † Brachythoraci |
Family: | † Panxiosteidae |
Genus: | †
Panxiosteus Wang, 1979 |
Type species | |
Panxiosteus oculus Wang, 1979
|
Panxiosteus is an extinct monospecific genus of placoderm arthrodire from the Middle Devonian: Givetian stage of Yunnan province, China.
Panxiosteus is a member of Panxiosteidae. In the 2010 Carr & Hlavin phylogenetic study, Panxiosteidae was recognized as the sister taxon to the family Dunkleosteidae, which together comprised the superfamily Dunkleosteoidea (one of the three major clades of Eubrachythoraci). [1] The phylogeny of Panxiosteus within Panxiosteidae is shown in the cladogram below from the 2013 Zhu & Zhu study: [2]
Eubrachythoraci |
|
Pachyosteomorphi | |||||||||||||||||||||||||||||||||
However, the subsequent 2016 Zhu et al. study using a larger morphological dataset recovered Panxiosteidae well outside of Dunkleosteoidea, instead within Coccosteomorphi and then Coccosteoidea as the sister group of Coccosteidae, as shown in the cladogram below: [3]
Eubrachythoraci | |