Neornithischia

Neornithischians Temporal range: Ma PreꞒ Ꞓ O S D C P T J K Pg N (possible Early Jurassic record)
Brussels Science Institute
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Clade:	†Ornithischia
Clade:	†Genasauria
Clade:	†Neornithischia Cooper, 1985
Subgroups
†Agilisaurus †Ampelognathus †Gongbusaurus? †Hexinlusaurus †Kulindadromeus †Lesothosaurus? †Minimocursor †Nanosaurus †Phyllodon †Sanxiasaurus †Xiaosaurus †Yandusaurus †Hypsilophodontidae †Jeholosauridae †Thescelosauridae †Cerapoda

Neornithischia ("new ornithischians") is a

A 2017 study by Matthew G. Baron, David B. Norman, and Paul M. Barrett recovered the Early Jurassic taxon Lesothosaurus diagnosticus from Southern Africa as the most basal known member of Neornithischia – a position previously held by Stormbergia dangershoeki (a taxon considered by the authors to be an adult form of Lesothosaurus and therefore a junior subjective synonym). However, Baron et al. go on to state that this result is only poorly supported and that future studies will be needed in order to better resolve the base of the ornithischian tree.^[3]

The below cladogram follows an analysis by Clint A. Boyd published in 2015 on the relationships of neornithischians:^[4]

The cladogram below results from analysis by Herne et al., 2019.^[5] Parksosaurus and Elasmaria were recovered within Ornithopoda, among other revised relationships.

References