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An Early Oligocene (Stampian, MP21-23, about 32 Ma) distal radius from Hamstead, Isle of Wight (England) was also assigned to Macrodontopteryx.
Placement of the Late Eocene/Early Oligocene genera Palaeotyto and Palaeobyas from Quercy (France) in this family is tentative; they might belong to the Sophiornithidae instead.