A probable mid-Ludlow graptolite faunule is described from the central Richardson Mountains, northern Yukon: The faunule contains Bohemograptus bohemicus tenuis, ?Bohemograptus sp., Pristiograptus cf. haupti, Monograptus uncinatus?, and ?Neodiversograptus sp. The faunule is distinctive in that a multibranched taxon, tentatively identified as Neodiversograptus, is present.

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