Askeptosauroidea

{{Automatic taxobox

| fossil_range = Anisian-Norian, {{fossil range|247|212}}

| image = Endennasaurus acutirostris.JPG

| image_caption = Skeleton of Endennasaurus acutirostris

| taxon = Askeptosauroidea

| authority = Kuhn-Schnyder, 1971

| subdivision_ranks = Subtaxa

| subdivision = * {{extinct}}Endennasaurus

{{extinct}}Pachystropheus
{{extinct}}Wayaosaurus
{{extinct}}Askeptosauridae

}}

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.{{cite journal |last=Liu |first=J. |author2=Rieppel, O. |year=2005 |title=Restudy of Anshunsaurus huangguoshuensis (Reptilia: Thalattosauria) from the Middle Triassic of Guizhou, China |journal=American Museum Novitates |issue=3488 |pages=1–34 |issn=0003-0082 |url=http://digitallibrary.amnh.org/dspace/bitstream/2246/5657/1/N3488.pdf |doi=10.1206/0003-0082(2005)488[0001:roahrt]2.0.co;2|s2cid=55642315 }}

Phylogeny

Below is a cladogram from Wu et al. (2009) showing the phylogenetic relationships of Askeptosauroidea:{{cite journal |last=Wu |first=X.-C. |author2=Cheng, Y.-N. |author3=Sato, T. |author4=Shan, H.-Y. |year=2009 |title=Miodentosaurus brevis Cheng et al., 2007 (Diapsida: Thalattosauria): its postcranial skeleton and phylogenetic relationships |journal=Vertebrata PalAsiatica |volume=47 |issue=1 |pages=1–20 |url=http://www.ivpp.ac.cn/cbw/gjzdwxb/xbwzxz/200902/W020090813372748918302.pdf |access-date=2011-04-23 |archive-url=https://web.archive.org/web/20111122152559/http://www.ivpp.ac.cn/cbw/gjzdwxb/xbwzxz/200902/W020090813372748918302.pdf |archive-date=2011-11-22 |url-status=dead }}

{{clade| style=font-size:100%;line-height:80%

|label1=Thalattosauria

|1={{clade

|label1=Askeptosauroidea

|1={{clade

|1=Endennasaurus

|label2=Askeptosauridae

|2={{clade

|1=Anshunsaurus

|2={{clade

|1=Askeptosaurus

|2=Miodentosaurus}} }} }}

|2=Thalattosauroidea

}} }}

References

Category:Thalattosauria

Category:Triassic first appearances

Category:Triassic extinctions