Page:Geology and Mineralogy considered with reference to Natural Theology, 1837, volume 2.djvu/254

This page has been validated.

Dorsal, lobe.

Dorsal Saddle.

Superior lateral lobe.

Lateral Saddle.

Inferior lateral lobe.

Ventral lobe.

Auxiliary lobe.

Ammonites Heterophyllus in Lias at Whitby.