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"Palaeozoic Brachiopods. 1. Lingula Lewisii (Silurian). 2. Obolus Aollinis (Silurian). 3. Leptaena transversalis (Silurian). 4. Orthis elegantula (Silurian). 5. Orthis striatula (Devonian). 6. Stophomena depressa (Silurian). 7. Atrypa reticularis (Silurian). 8. Pentamerus. 9. Spirifer striatus (Carb. Limestone). 10. Spirifer speciosus (Devon). 11. Spirifer trigonalis (Carb. Limestone)." -Taylor, 1904

Paleozoic Brachiopods

"Palaeozoic Brachiopods. 1. Lingula Lewisii (Silurian). 2. Obolus Aollinis (Silurian). 3. Leptaena transversalis…

"Unconformability between horizontal and inclined strata. Inferior Oolite (a b) resting on Carboniferous Limestone (c); Frome, Somerset." -Geikie, 1893

Unconformable Strata

"Unconformability between horizontal and inclined strata. Inferior Oolite (a b) resting on Carboniferous…