†suborder Spondilocoelia Ameghino 1889 (monotreme)
Full reference: F. Ameghino. 1889. Contribución al conocimiento de los mamíferos fósiles de la República Argentina [Contribution to the knowledge of the fossil mammals of the Argentine Republic]. Actas de la Academia Nacional de Ciencias de la República Argentina en Córdoba 6:xxxii-1027
Parent taxon: Monotremata according to F. Ameghino 1889
Sister taxa: Agathodonta, Cacodonta, Kollikodontidae, Kryoryctes, Ornithorhynchidae, Patagorhynchus, Platypoda, Steropodontidae, Stirtodon, Tachyglossa, Tachyglossidae
Subtaxa: none
Ecology: scansorial insectivore
Distribution: there are no occurrences of Spondilocoelia in the database