|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Reptilia - Squamata
It was considered an invalid subgroup of Serpentes by Vidal and Hedges (2002); it was reranked as the infraorder Macrostomata by Rieppel et al. (2003).
It was assigned to Alethinophidia by Lee and Scanlon (2002); to Serpentes by Rieppel et al. (2003); and to Alethinophidia by Wilcox et al. (2002) and Longrich et al. (2012).
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.