outline24 - Outline24 Synapsidlineage ,Penn.Perm...

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  Outline 24 4/28/03   Synapsid  lineage:      Pelycosaurs † - Sail-backed reptiles like Dimetrodon , Penn.- Perm.      Therapsids  +            many others in Gondwana continents, dominated L. Perm -           Triassic      *Mammals  - Evolved from small active carnivorous therapsids           many morphologic + behavioral improvements, started to           radiate in L. Cret., big radiation to dominance in E. Tertiary           after Cret. - Tert. extinction of dinosaurs, ~4,500  living            species   Diapsid  lineages:  (major reptile groups            today) + marine mosasaurs † in L. Cret.
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  • Spring '08
  • Staff
  • L. Cret., Cretaceous bigger radiation, active carnivorous therapsids, small Cretaceous theropods, E. Tertiary, quadrapedal herb

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outline24 - Outline24 Synapsidlineage ,Penn.Perm...

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