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