Protaspis

Protaspis Temporal range: Late Emsian
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Infraphylum:	Agnatha
Class:	†Pteraspidomorphi
Subclass:	†Heterostraci
Order:	†Pteraspidiformes
Family:	†Protaspididae
Genus:	†Protaspis Bryant, 1933
Type species
Pteraspis bucheri Bryant, 1932
Species
Protaspis bucheri (Bryant, 1932) Protaspis dorfi (Bryant, 1932) Protaspis macgrewi Denison, 1970

Protaspis is an extinct genus of pteraspidid heterostracan agnathan which lived during the Early Devonian of the United States, with fossils found in marine strata in what is now Utah, Wyoming and Idaho.

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Pteraspidomorphi

• Kingdom: Animalia
• Phylum: Chordata
• Subphylum: Vertebrata

Pteraspidomorphi
Pteraspidomorphi Anatolepis Arandaspida Arandaspidiformes Astraspididae Astraspis Arandaspididae Andinaspis Apedolepis Arandaspis Areyongalepis Pircanchaspis Porophoraspis Ritchieichthys Sacabambaspis Heterostracomorphi Astraspida Astraspidiformes Astraspididae Astraspis Pycnaspis Tesakoviaspidida Tesakoviaspididae Kodinskaspis Tesakoviaspis Eriptychiida Eriptychiiformes Eriptychiidae Eleochera Eriptychiidae Eriptychius Oniscolepididae Kallostrakon Oniscolepis Heterostraci see below↓

Heterostraci
Heterostraci Cyathaspidiformes see below↓ Pteraspidiformes see below↓ Cardipeltida Cardipeltis Lepidaspidida Lepidaspis Corvaspidida Corvaspis Tolypelepidida Asketaspis Athenaegis Tolypelepis Tesseraspidiformes Natlaspis Tesseraspis Traquairaspidiformes Phialaspididae Munchoaspis Phialaspis Toombsaspis Traquairaspididae Pseudotraquairaspis Rimasventeraspis Traquairaspis Weigeltaspididae？ Weigeltaspis

Cyathaspidiformes
Cyathaspidiformes Nakaolinaspis？ Cyathaspidida Cyathaspidae Cyathaspis Americaspis Archegonaspis Capitaspis Dikenaspis Dinaspidella Homaspidella Irregulareaspis Nahanniaspis Pionaspis Poraspis Ptomaspis Seretaspis Steinaspis Torpedaspis Veronaspis Ariaspidae Ariaspis Anglaspis Listraspis Liliaspis Paraliliaspis Ctenaspidae Ctenaspis Allocryptaspis Alainaspis Zaphoctenaspis Arctictenaspis Boothiaspis Amphiaspidida incertae sedis Gunaspis Amphiaspidoidei Amphiaspididae Amphiaspis Amphoraspis Edaphaspididae Edaphaspis Gabreyaspididae Gabreyaspis Prosarctaspis Pelaspis Tareyaspis Olbiaspididae Olbiaspis Kureykaspis Angaraspis Hibernaspidoidei Hibernaspididae Hibernaspis Eglonaspididae Eglonaspis Gerronaspis Lecaniaspis Empedaspis Pelurgaspis Aphataspididae Aphataspis Putoranaspis Siberiaspidoidei Siberiaspididae Siberiaspis Argyriaspis Tuxeraspididae Tuxeraspis Litotaspis Dotaspis

Pteraspidiformes
Pteraspidiformes Anchipteraspididae Anchipteraspis Rhachiaspis Ulutitaspis Podolaspididae Dnestraspis Parapteraspis Semipodolaspis Protopteraspididae Protopteraspis Doryaspis Escharaspis Miltaspis Stegobranchiaspis Unkaraspis "Trygonaspis" Psammosteida Tartuosteus Weigeltaspis？ Drepanaspididae Drepanaspis Guerichosteidae Guerichosteus Hariosteus Pycnolepis Pycnosteidae Tartuosteus Pycnosteus Psammolepididae Psammosteus Psammosteidae Crenosteus Elgaia Karelosteus Osteoplax Placosteus Psammosteus Psarkosteus Rohonosteus Selerolepis Vladimirolepis Obrucheviidae Obruchevia Pteraspidoidei incertae sedis Palanasaspis Pteraspididae Althaspis Blieckaspis Brachipteraspis Errivaspis Escharaspis Grumantaspis Helaspis Larnovaspis Loricopteraspis Miltaspis Mitraspis Mylopteraspidella Mylopteraspis Podolaspis Pteraspis Rhinopteraspis Stegobranchiaspis Gigantaspididae Gigantaspis Protaspididae Protaspis Cosmaspis Lampraspis Europrotaspis Cyrtaspidichthys Oreaspis Psephaspis Rodenaspis Tuberculaspis Xylaspis Zascinaspis Woodfjordaspis Pirumaspis

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