. Early Devonian fishes from Utah : Arthrodira . s. PL Fig. 109. Right posterior dorso-lateral plates of Arctolepida, all reduced to the same area. A, Phlycfaenaspis acadica, after Heintz, 1933 (X ); B, Pro- sphymaspis subtilis, after Gross, 1933b (X ); C, Gronlandaspis mirabilis, after Stensio, 1939 (X ); D, "Phhjctaenaspis" heintzi, after Gross, 1937 (X ); E, Anarthraspis sp., restored from PF 1527, 261 (X ); F, Aethaspis major, PF 303 (X ); G, undetermined arctolepid from Utah, PF 534 (X ); H, Bryantolepis brachycephalus, PF 180 (X ); I, Kujdanowiaspis sp.,

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. Early Devonian fishes from Utah : Arthrodira . s. PL Fig. 109. Right posterior dorso-lateral plates of Arctolepida, all reduced to the same area. A, Phlycfaenaspis acadica, after Heintz, 1933 (X ); B, Pro- sphymaspis subtilis, after Gross, 1933b (X ); C, Gronlandaspis mirabilis, after Stensio, 1939 (X ); D, "Phhjctaenaspis" heintzi, after Gross, 1937 (X ); E, Anarthraspis sp., restored from PF 1527, 261 (X ); F, Aethaspis major, PF 303 (X ); G, undetermined arctolepid from Utah, PF 534 (X ); H, Bryantolepis brachycephalus, PF 180 (X ); I, Kujdanowiaspis sp., from cast of Podolian specimen, PF 1173 (X ). Ic, main lateral line; s. ADL, s. AL, s. MD, s. PL, external overlap areas for anterior dorso-lateral, anterior lateral, median dorsal, posterior lateral. 522

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Keywords: ., bookcentury1900, bookcollectionbiodiver, booksubjectfishesfossil