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Child Therapy

Coaching Both Parent And Child - 1 views

I want to see my kid happy and grow to his full potential. That is why, when I see him having trouble opening up to me or to other people, I feel bad as a parent. I feel that I am not doing a good ...

started by Child Therapy on 28 Sep 12 no follow-up yet
Jose M Perez

Acute vision in the giant Cambrian predator Anomalocaris and the origin of compound eye... - 0 views

www.nature.com/...nature10689.html

shared by Jose M Perez on 17 Dec 11 - No Cached
  • 2–3-cm paired eyes from the early Cambrian (approximately 515 million years old
  • Anomalocaris
  • at least 16,000 hexagonally packed ommatidial lenses (in a single eye)
  • ...9 more annotations...
  • origin of compound eyes deeper down the arthropod stem lineage
  • evolved before such features as a hardened exoskeleton
  • processing of visual information would have required
  • sophisticated nektonic predators with acute vision
  • brain to be of comparable complexity to
  • modern) arthropods
  • within Cambrian communities would have placed considerable selective pressures on prey that would have influenced the ‘arms race’ that began during this important phase in early animal evolution
  • sophisticated
  • Nature International
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