Genus: Menarana LADUKE, KRAUSE, SCANLON & KLEY, 2010
Etymology: Malagasy, menarana, "snake."

Species: nosymena LADUKE, KRAUSE, SCANLON & KLEY, 2010
Etymology: Malagsay, nosy, "island" and Malagasy, mena, "red"; in reference to the commonly used nickname for Madagascar, the Red Island.

Holotype: UA 9684

Locality: MAD93-14, Berivota Study Area, Mahanjanga Basin, Northwesern Madagascar.

Horizon: Maevarano Formaiton.

Biostratigraphy:

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

Material: Partially skeleton consisting of a large number of articulated or associated complete, nearly complete, and fragmentary vertebrae (including a partial atlas), several fragmentary ribs, and a sizable fragment of the braincase, all preserved to have been derived from the same individual because they share comparable morphology and similar preservational characteristics, represents teh same sized snake and were collected from the same small area.

Referred material:

Localities: Berivotra Study area localities, MAD 93-14, 93-16, 93-35, 99-31, 05-14, Masiakakoho Study area localities MAD05-59, 07-37, Mahanjanga Basin, Northwesern Madagascar.

Horizon: Maevarano Formaiton.

Biostratigraphy:

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

Material:

UA 9687-1, -2: 2 associated anterior trunk vertebrae.

UA 9687-2: Anterior trunk vertebra.

FMNH PR 2543, 2544, 2703, UA 9686 (juvenile): Mid-trunk vertebrae.

FMNH PR 2542: Posterior trunk vertebra.

UA 9685, 9713, 9733: Fragmentary vertebrae.