Apedolepis

Apedolepis (meaning "flat scale", from Greek ἄπεδοςi, apedos, meaning 'even', 'flat', or 'level' and λεπίς, meaning 'scale') was an extinct genus of early jawless fish known from the Ordovician Stokes Formation of central Australia.^[1] All existing material was collected in the Areyonga Creek section of the eastern Gardiner Range.^[1] Apedolepis is known solely from scales, with the type specimen (CPC 33630) consisting of a single scale.^[1]

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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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