List of Parareptilia genera and families that survived the Permian-Triassic Extinction Event 252 Million Years ago

[Joseph Fossil]

The Permian-Triassic Extinction event of 252 Million Years (caused by massive volcanic eruptions in what is now Siberia) was one of the biggest mass extinctions in Earth's history (killing 75% of all land genera and 95% of all marine genera). The event marked the end of the Paleozoic and the beginning of the Mesozoic. Famous survivors of the extinction event include the Dicynodont Lystrosaurus, the Therocephalians Moschorhinus, Promoschorhynchus, and the Cynodont Thrinaxodon.
 
One surprising group of terrestrial survivors of the extinction event sometimes overlooked are the Parareptilia, also known as the Parareptiles. 

 

The Parareptiles were an ancient group of sauropsids that emerged during the Pennsylvanian stage of the Carboniferous 306 Million Years ago and are a sister taxon to Eureptilia. The Parareptiles reached their ecological zenith during the Permian with some becoming small aquatic predators while others like the Pareiasaurs became 9 foot long, 2,200 lbs herbivores. The Permian-Triassic Extinction Event decimated the group's initial diversity, but a few smaller and more generalist parareptiles survived the event and briefly diversified again before becoming extinct 201.3 Million Years ago at the end of the Triassic.  Here’s a list of all currently known Parareptile genera and families that survived the Permian-Triassic Extinction Event.

 

If I forget any examples, please let me know and I'll add the examples to the list promptly.

 

 

Procolophonomorpha

 

Procolophonidae

Sauropareion (Procolophonid) (Late Permian-Early Triassic, 252.3-2247.2 Million Years ago)

 

http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=139841

 

https://nasmus.co.za/wp-content/uploads/2019/01/Botha-et-al-2007a.pdf

 

https://www.researchgate.net/publication/254314303_New_Information_on_the_Skull_of_the_Early_Triassic_Parareptile_Sauropareion_anoplus_with_a_Discussion_of_Tooth_Attachment_and_Replacement_in_Procolophonids

 

Owenettidae

 

Owenetta (Owenettid) (Late Permian-Early Triassic, 254.0-251.3 Million Years ago)

 

http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=37521

 

https://nasmus.co.za/wp-content/uploads/2019/01/Botha-et-al-2007a.pdf

 

https://www.jstor.org/stable/4524219

 

Barasaurus (Owenettid) (Late Permian-Early Triassic, 252.3-247.2 Million Years ago)

 

http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=37519

 

https://www.researchgate.net/publication/237169170_New_reptile_material_from_the_Lower_Triassic_of_Madagascar_Implications_for_the_Permian-Triassic_extinction_event

 

I hope you all found this helpful!!!