Evolution tree...phylogeny-simple question

last updated by

JackBean 14 years, 11 months ago

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- January 13, 2010 at 3:50 am #12599
  hmeworkuser
  Participant
  Hello i have been trying to write about phylogeny of following 4 organisms
  Snail , Fish, pig and dinosaur.
  Can someone help me what is the correct direction of evolution for these 4 organisms in phylogenetic tree of evolution? which came first and which came in end ..like that
  Thanks in advance
- January 13, 2010 at 3:59 am #96624
  hmeworkuser
  Participant
  kindly help me
- January 13, 2010 at 4:02 am #96625
  firechild
  Participant
  The correct order of evolution is snail, fish, dinosaur, pig. Do you need any more information such as timing of different evolutionary points?
- January 13, 2010 at 4:08 am #96626
  hmeworkuser
  Participant
  Thanks .Yes can you provide some more information on evolutionary periods, etc?
- January 13, 2010 at 5:50 am #96628
  Chroma
  Participant
  [ snail [ Fish [ Dinosaur + Pig ]]]
  If I recall correctly snails would have diverged from the other three close to the Cambrian period (~570 MYA, though likely before), and Dinosaurs arose in the Triassic (~250 MYA, sometime after) so fish would have to have diverged from the other chordates between 570 and 250 MYA… Pigs, being a modern mammal, would have come about sometime after the dinosaur extinction 65MYA… I’m sure someone else can give you a better answer (google/wikipedia is usually good) but this is a start…
- January 13, 2010 at 9:05 am #96634
  JackBean
  Participant
  quote hmeworkuser:
  kindly help me
  LOL, after 9 minutes? 😆
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