Dorsetisaurus

Dorsetisaurus is a genus of extinct lizard, known from the Late Jurassic of North America, and the Late Jurassic-earliest Cretaceous of Europe. The genus was first reported from the Early Cretaceous (Berriasian) Lulworth Formation of the Purbeck Group of Durlston Bay, in Dorset. It has also been reported from the Late Jurassic aged Alcobaça Formation of Portugal and Morrison Formation of Western North America[1] present in stratigraphic zones 2, 4, and 5.[2] It is considered the oldest widely accepted member of Anguimorpha.[3] based on the presence of 11 shared synapomorphies.[4]

• Paleobiota of the Morrison Formation

Dorsetisaurus Temporal range: Late Jurassic–Berriasian PreꞒ Ꞓ O S D C P T J K Pg N
Dorsetisaurus purbeckensis, NHMUK PV R 8129
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Squamata
Infraorder:	Neoanguimorpha
Clade:	Diploglossa
Clade:	Anguioidea
Family:	†Dorsetisauridae
Genus:	†Dorsetisaurus Hoffstetter, 1967
Species
D. hebetidens D. purbeckensis

References

1. Foster, J. (2007). "Table 2.1: Fossil Vertebrates of the Morrison Formation." Jurassic West: The Dinosaurs of the Morrison Formation and Their World. Indiana University Press. pp. 58-59.
2. Foster, J. (2007). "Enneabatrachus hechti" Jurassic West: The Dinosaurs of the Morrison Formation and Their World. Indiana University Press. p. 137.
3. Daza, J. D.; Bauer, A. M.; Stanley, E. L.; Bolet, A.; Dickson, B.; Losos, J. B. (2018-11-01). "An Enigmatic Miniaturized and Attenuate Whole Lizard from the Mid-Cretaceous Amber of Myanmar". Breviora. 563 (1): 1. doi:10.3099/mcz49.1. ISSN 0006-9698.
4. Conrad, Jack L.; Ast, Jennifer C.; Montanari, Shaena; Norell, Mark A. (9 May 2011). "A combined evidence phylogenetic analysis of Anguimorpha (Reptilia: Squamata)". Cladistics. 27 (3): 230–277. doi:10.1111/j.1096-0031.2010.00330.x.