Askeptosauroidea

Askeptosauroidea is a superfamily of thalattosaurs, a Triassic group of marine reptiles. Askeptosauroidea is one of two major subgroups of Thalattosauria, the other being Thalattosauroidea. It includes the family Askeptosauridae and a more basal form called Endennasaurus.[1]

Askeptosauroidea Temporal range: Middle Triassic-Late Triassic, 237–228 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Skeleton of Endennasaurus acutirostris
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	†Thalattosauria
Superfamily:	†Askeptosauroidea Kuhn-Schnyder, 1971
Subtaxa
†Endennasaurus †Askeptosauridae

Phylogeny

Below is a cladogram from Wu et al. (2009) showing the phylogenetic relationships of Askeptosauroidea:[2]

Thalattosauria	Askeptosauroidea    Endennasaurus    Askeptosauridae    Anshunsaurus       Askeptosaurus     Miodentosaurus           Thalattosauroidea

References

1. Liu, J.; Rieppel, O. (2005). "Restudy of Anshunsaurus huangguoshuensis (Reptilia: Thalattosauria) from the Middle Triassic of Guizhou, China" (PDF). American Museum Novitates. 3488: 1–34. doi:10.1206/0003-0082(2005)488[0001:roahrt]2.0.co;2. ISSN 0003-0082.
2. Wu, X.-C.; Cheng, Y.-N.; Sato, T.; Shan, H.-Y. (2009). "Miodentosaurus brevis Cheng et al., 2007 (Diapsida: Thalattosauria): its postcranial skeleton and phylogenetic relationships" (PDF). Vertebrata PalAsiatica. 47 (1): 1–20. Archived from the original (PDF) on 2011-11-22. Retrieved 2011-04-23.