[decimon]

Ping

[hellbender]

This way, you can start analysing observed and extrapolated abundance of species through time, and you can quantify novel origination and extinction events that would otherwise go unnoticed if you were to look at known finds only.”

Sounds as if they're using statistics and imagination rather than real fossil data.

[AndrewB]

[gleeaikin]

Were the parareptiles the same as the therapsids? My understanding was that the therapsids, which were a strong protomammalian group before the great Permian extinction, died out but were the precursors of the small mammals that persisted throughout the reign of the dinosaurs, which then flourished after the dinosaur extinction 65 mya.

[colorado tanker]

Another parareptile survivor: