Early Devonian fishes from Utah : Arthrodira earlydevonianfis119deni Year: 1953 DENISON: EARLY DEVONIAN FISHES 513 The blade or posterior part of the suborbital is relatively large in Aethaspis, Phlyctaenaspis, and Anarthraspis. In Anarthraspis it has a posterior projection that is not known in other euarthrodires. In Aethaspis utahensis the blade has an unornamented dorsal border

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