Existence: A Visual Journey of All That Is
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Existence
Pteraspidomorphi
Extinct jawless fish with extensive dermal armor covering their heads which lived during the Early Ordovician to the Late Devonian period.
(Taxonomic Rank: Superclass)
(Click on Images to View Information & Collectibles)
Arandaspis
Order: Arandaspidiformes
Astraspis
Order: Astraspidiformes
Cardipeltis
Order: Cardipeltida
Corvaspis
Order: Corvaspidida
Cyathaspis
Order: Cyathaspidiformes
Lepidaspis
Order: Lepidaspidida
Protaspis
Order: Pteraspidiformes
Protopteraspis
Order: Pteraspidiformes
Pteraspis
Order: Pteraspidiformes
Tolypelepis
Order: Tolypelepidida
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