Flows of the oldest group originated from La Joya cinder cone (radiocarbon ages ˜42 yr BP) at the eastern end of the CPVC. Sex-based hatching asynchrony in an oviparous lizard (Bassiana duperreyi, Scincidae). Radder, R. ; Shine, R. Sex-based hatching asynchrony in an oviparous lizard (Bassiana duperreyi, Scincidae). Austral Ecology 32(5): Radder, R. Flows of the oldest group originated from La Joya cinder cone (radiocarbon ages ˜42 yr BP) at the eastern end of the CPVC. Radder, R. S. This cone fed an olivine. This cone fed an olivine. S. S. Austral Ecology 32(5): Radder, R. S. ; Shine, R. .