The Triassic saw the first of this lactating type of animal, evolving from creatures called synapsids
[DOC] [TLE] MACRO EVOLUTION: THE VICISSITUDES OF LIFE ON EARTH [PAR] Synapsids .... their DNA in a separate enclosed nucleus, they are called 
prokaryotes, from ... Two other kinds of bacteria that have the capacity to live off 
inorganic .... first more complex, macroscopic animals about 700 to 800 million 
years ago ...... reptiles had evolved by the Permian, and in the Triassic some 
comparatively... [DOC] [TLE] Brczi- Akta 97.cdr [PAR] Permian (and Triassic) times converted some synapsid reptiles into ... Late 
Paleosoic and Mesosoic evolution of therapsid reptiles gives some ... as if hair, 
dominant dentale, secondary jaw articulation, vivipary and lactation had all been 
... redundant: it was never high enough to affect animals directly, onto them it 
acted via