Fish Chordata Bilateria Animals Life Existence
Anaspida Extinct jawless fish with small, slender, lamprey-like bodies which lived during the Upper Silurian through the Upper Devonian period.
(Taxonomic Rank: Superclass)

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	Birkenia   Order: Anaspidiformes Endeiolepis   Order: Anaspidiformes Lasanius   Order: Anaspidiformes Pharyngolepis   Order: Anaspidiformes Pterygolepis   Order: Anaspidiformes Rhyncholepis   Order: Anaspidiformes
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