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