Benneviaspidida
Appearance
Benneviaspidida Temporal range: Devonian
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Boreaspis, a fish in order Benneviaspidida | |
Scientific classification | |
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Order: | Benneviaspidida
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Families | |
Benneviaspidida is an order of osteostracan jawless fishes which lived in the Early Devonian. The fishes in order Benneviaspidida have a flat headshield and are dorsoventrally depressed. The first canal to lateral sensory field bifurcates near the orbit.