Stenoplacosaurus

Stenoplacosaurus; Temporal range: Eocene PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Squamata
Family:	Anguidae
Subfamily:	†Glyptosaurinae
Genus:	†Stenoplacosaurus; Sullivan and Dong, 2018
Type species
	†Helodermoides mongoliensis; Sullivan, 1979

Stenoplacosaurus is an extinct genus of glyptosaurine anguid lizards from the Eocene of Inner Mongolia, China. The genus is monotypic, containing only the species Stenoplacosaurus mongoliensis.

Taxonomy

Stenoplacosaurus was originally named Helodermoides mongoliensis by Sullivan (1979) for remains found in the Shara Murun Formation of Inner Mongolia, China.^[1] In their redescription of Placosaurus, Sullivan and Auge (2006) transferred H. mongoliensis to Placosaurus, as P. mongoliensis.^[2] However, Sullivan and Dong (2018) found it to be generically distinct from the Placosaurus type species and renamed it Stenoplacosaurus.^[3]

References

^ Sullivan, Robert M. (1979). "Revision of the Paleogene genus Glyptosaurus (Reptilia, Anguidae)". Bulletin of the American Museum of Natural History. 163: 1–72.
^ Sullivan, R. M. & Augé, M. (2006). "Redescription of the holotype of Placosaurus rugosus Gervais 1848–1852 (Squamata, Anguidae, Glyptosaurinae) from the Eocene of France and a revision of the genus". Journal of Vertebrate Paleontology. 26: 127–132. doi:10.1671/0272-4634(2006)26[127:ROTHOP]2.0.CO;2. JSTOR 4524542.
^ Sullivan, Robert M. & Dong, L. (2018). "Stenoplacosaurus mongoliensis, a new generic name for "Placosaurus" mongoliensis (Anguidae, Glyptosaurinae) from the Shara Murun Formation, Nei Mongol (Inner Mongolia), China". New Mexico Museum of Natural History and Science. 79: 691–694.

[1] Sullivan, Robert M. (1979). "Revision of the Paleogene genus Glyptosaurus (Reptilia, Anguidae)". Bulletin of the American Museum of Natural History. 163: 1–72.

[2] Sullivan, R. M. & Augé, M. (2006). "Redescription of the holotype of Placosaurus rugosus Gervais 1848–1852 (Squamata, Anguidae, Glyptosaurinae) from the Eocene of France and a revision of the genus". Journal of Vertebrate Paleontology. 26: 127–132. doi:10.1671/0272-4634(2006)26[127:ROTHOP]2.0.CO;2. JSTOR 4524542.

[3] Sullivan, Robert M. & Dong, L. (2018). "Stenoplacosaurus mongoliensis, a new generic name for "Placosaurus" mongoliensis (Anguidae, Glyptosaurinae) from the Shara Murun Formation, Nei Mongol (Inner Mongolia), China". New Mexico Museum of Natural History and Science. 79: 691–694.

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