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Definition of Suborder Heterostraci
1. Noun. Extinct group of armored jawless fishes or fish-like vertebrate; taxonomy is not clear.
Exact synonyms: Heterostraci
Generic synonyms: Animal Order
Group relationships: Order Ostracodermi, Ostracodermi
Member holonyms: Heterostracan
Generic synonyms: Animal Order
Group relationships: Order Ostracodermi, Ostracodermi
Member holonyms: Heterostracan