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Fish: Yvonaspis campbelltonensis (Whiteaves)
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Fish: Yvonaspis campbelltonensis (Whiteaves). Devonian. Campbellton, New Brunswick. Collector: Mr. Jex, c. 1890. New Brunswick Museum (NBMG 3071). Image width (left) 5 cm. Yvonaspis was a cephalaspid, a jawless fish with an armoured head. The headshields of cephalaspid fish are distinctive arrow-shaped structures. A close-set pair of eyes was located near the middle of the head.
