Falseryx neervelpensis, Szyndlar & Smith & Rage, 2008

Szyndlar, Zbigniew, Smith, Richard & Rage, Jean-Claude, 2008, A new dwarf boa (Serpentes, Booidea, ‘ Tropidophiidae’) from the Early Oligocene of Belgium: a case of the isolation of Western European snake faunas, Zoological Journal of the Linnean Society 152 (2), pp. 393-406 : 395

FALSERYX NEERVELPENSIS SP. NOV.

Holotype: IRSNB R 240 , one trunk vertebra.

Referred material: IRSNB R 237-239, 241 (four trunk vertebrae), unnumbered 78 trunk vertebrae, collection R. Smith; IRSNB R 233 (one cloacal vertebrae); IRSNB R 234-236 (three caudal vertebrae), unnumbered 16 caudal vertebrae, collection R. Smith.

Type locality: Boutersem TGV ( Belgium).

Type horizon: Earliest Oligocene ( MP 21).

Etymology: After the name Neervelp, a hamlet from Boutersem quite near the Boutersem TGV site.

Diagnosis: Differs from Falseryx petersbuchi by having trunk vertebrae provided with longer centra, shallower interzygapophyseal constriction, deeper posterior notch of the neural arch, lower and more thickened dorsally neural spine, underdeveloped or absent central lobe of the zygosphene, distinctly larger tubercles developed from the prezygapophyseal buttresses, smaller and less extended dorsoventral paradiapophyses; larger vertebral foramina; by having cloacal and anterior caudal vertebrae provided with shorter hypapophyses.