Sex-based hatching asynchrony in an oviparous lizard (Bassiana duperreyi, Scincidae). 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. . S. Sex-based hatching asynchrony in an oviparous lizard (Bassiana duperreyi, Scincidae). S. This cone fed an olivine. 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. ; Shine, R. This cone fed an olivine. Austral Ecology 32(5): Radder, R. Austral Ecology 32(5): Radder, R. ; Shine, R. S.