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