Ankylosphenodon

Ankylosphenodon; Temporal range: Early Cretaceous[1] PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Sphenodontia
Family:	Sphenodontidae
Genus:	Ankylosphenodon †; Reynoso, 2000[1]
Species
	A. pachyostosus † Reynoso, 2000;

Ankylosphenodon is an extinct species of sphenodontian known from Tepexi de Rodriguez, Mexico.[1] It is known from Early Cretaceous sedimentary deposits from the Tlayua formation.[1]

Lifestyle

Ankylosphenodon is thought to have been an aquatic reptile due to its pachyostotic skeleton and other anatomical features often seen in aquatic animals.[1] There is also evidence that its teeth were constantly growing throughout its lifetime, which may be indicative of herbivory, a rare characteristic among Lepidosauria.[1]

References

Reynoso, Victor-Hugo (2000). "An unusual aquatic Sphenodontian (Reptilia: Diapsida) from the Tlayua Formation (Albian), Central Mexico". Journal of Paleontology. 74 (1): 133–148. CiteSeerX 10.1.1.865.5301. doi:10.1017/S0022336000031310. JSTOR 1306891.

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[Reynoso_2000-1] Reynoso, Victor-Hugo (2000). "An unusual aquatic Sphenodontian (Reptilia: Diapsida) from the Tlayua Formation (Albian), Central Mexico". Journal of Paleontology. 74 (1): 133–148. CiteSeerX 10.1.1.865.5301. doi:10.1017/S0022336000031310. JSTOR 1306891.