Brachiopods present in the Mid-Devonian rocks of Northern Canada include seven representatives of the family Productellidae (six of the subfamily Productellinae and one of the Chonopectinae) and two of the family Chonetidae. Two of the Productellinae are new species of the genera Productella and Spinulicosta.

Most of the specimens were recovered from the Hume Formation and few from the overlying Hare Indian (Kee Scarp and Canol formations.

Some species appear to be restricted stratigraphically and promise to be useful zonal indices: a new species of Productella has been found only in the lower part of the Hume Formation, Spinulicosta strainbrooki only in the upper part of the Hume Formation, and Chonetes aurorus only in the upper part of the Hare Indian Formation.

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