Genus: Martinavis WALKER, BUFFETAUT & DYKE, 2007
Etymology: In honor of Larry D. Martin, in recognition of his contributions to the study of Mesozoic birds and for his support of Cyril Walker in the 1980s, and Latin, avis, "bird."

Species: cruzyensis WALKER, BUFFETAUT & DYKE, 2007
Etymology: For the village of Cruzy, Herault, southern France, where this specimen was collected (Messacaps locality).

Holotype: ACAP-M 1957

Locality: Massecaps locality, village of Cruzy, Herault Province, France.

Horizon:

Biostratigraphy:

Age: Late Campanian Stage-Early Maastrichtian Stage, Uppermost Senonian Subepoch, Uppermost Gulf Epoch, Late Cretaceous.

Material: A complete right humerus.

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Species: vincei WALKER, BUFFETAUT & DYKE, 2007
Etymology: In honor of M. Vince who helped to collect the original El Brete material and was responsible for much of its preparation (J. Bonaparte, pers. comm. 1976).

Holotype: PVL 4054

Locality: Estancia El Brete, Department of Candelaria, Southern Salta Province, Northwestern Argentina.

Horizon: Lecho Formation, Balbuena Subgroup, Salta Group.

Biostratigraphy:

Age: Maastrichtian Stage, Upper Senonian Subepoch, Upper Gulf Epoch, Late Cretaceous.

Material: Left humerus.

Paratype:

PVL 4059: Distal end of left humerus.

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Species: saltariensis WALKER & DYKE, 2009
Etymology: In reference to Salta, the Argentine province where the El Brete collection was excavated in the 1970s.

Holotype: PVL 4025

Locality: Estancia El Brete, Department of Candelaria, Southern Salta Province, Northwestern Argentina.

Horizon: Lecho Formation, Balbuena Subgroup, Salta Group.

Biostratigraphy:

Age: Maastrichtian Stage, Upper Senonian Subepoch, Upper Gulf Epoch, Late Cretaceous.

Material: Left humerus.

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Species: minor WALKER & DYKE, 2009
Etymology: Latin, minor, "minor' or small." The specific name referes to the small size of this species, in comparison with the holotype of the genus.

Holotype: PVL 4046

Locality: Estancia El Brete, Department of Candelaria, Southern Salta Province, Northwestern Argentina.

Horizon: Lecho Formation, Balbuena Subgroup, Salta Group.

Biostratigraphy:

Age: Maastrichtian Stage, Upper Senonian Subepoch, Upper Gulf Epoch, Late Cretaceous.

Material: Distally imperfect right humerus.

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Species: whetstonei WALKER & DYKE, 2009
Etymology: In honor of K. H. Whetstone who gave C. Walker considerable encouragement to publish a paper on those 'strange birds' in the early 1980s.

Holotype PVL 4028

Locality: Estancia El Brete, Department of Candelaria, Southern Salta Province, Northwestern Argentina.

Horizon: Lecho Formation, Balbuena Subgroup, Salta Group.

Biostratigraphy:

Age: Maastrichtian Stage, Upper Senonian Subepoch, Upper Gulf Epoch, Late Cretaceous.

Material: Imperfect left humerus.

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