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Terranovia, Arctic Vicariant of the Devonian Lichid Ceratarges (Trilobita)
Allen R. Ormiston
Journal of Paleontology
Vol. 56, No. 5 (Sep., 1982), pp. 1257-1265
Published by: SEPM Society for Sedimentary Geology
Stable URL: http://www.jstor.org/stable/1304586
Page Count: 9
You can always find the topics here!Topics: Paleontology, Pragian age, Biostratigraphy, Latex, Immatures, Ontogeny, Latitude, Bays, Fauna, Emsian age
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Terranovia nalivkini Maximova, 1977, a distinctive Lower Devonian lichid trilobite previously known from a single locality on Novaya Zemlya, Soviet Union, is demonstrated to occur widely in the Canadian Arctic in strata no older than Pragian and no younger than early Zlichovian. This trilobite, originally considered to be closest to Acanthopyge, is shown to be allied with Ceratarges. The impressive similarities in gross form, especially in the number, size and position of major spines, between Terranovia and Ceratarges combined with a recognition of their mutually exclusive geographic distributions suggest that Terranovia may be a vicariant of the European Ceratarges.
Journal of Paleontology © 1982 SEPM Society for Sedimentary Geology