Devonian-Silurian Fossils
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| BACK TO INDEX | Devonian | ||
| Fig. 1 | Eatonia singularis (Vanuxem) | ||
| Fig. 2 | Eatonia singularis (Vanuxem) | ||
| Fig. 3 | Eatonia peculiaris (Conrad) | ||
| Fig. 4 | Eatonia sinuata Hall | ||
| Fig. 5 | Eatonia sinuata Hall | ||
| Fig. 6 | Spirifer macropleura (Conrad) | ||
| Fig. 7 | Rhipidomella assimilis (Hall) | ||
| Fig. 8 | Spirifer murchisoni Castelnau | ||
| Fig. 9 | Phacops rana (Green) | ||
| Fig. 10 | Grammysia arcuata (Conrad) | ||
| Fig. 11 | Spirorbis gyrus Clarke | ||
| Fig. 12 | Belleroph (Bucanopsis) leda Hall | ||
| Fig. 13 | Pterinea nodocosta Clarke | ||
| Fig. 14 | Orthoceras constrictum Vanuxem | ||
| Fig. 15 | Spirifer mesastrialis Hall | ||
| Fig. 16 | Spirifer disjunctus Sowerby | ||
| Fig. 17 | Palaeaster clarki Clarke | ||
| Fig. 18 | Turbo coronula Clarke | ||
| Fig. 19 | Buchiola retrostriata v. Buch | ||
Silurian |
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| Figs. 20-23 | Whitfieldella intermedia Hall | ||
| Fig. 24 | Arthrophycus harlani Conrad (greatly reduced) | ||
| Figs. 25-27 | Spirifer octocostatus Hall | ||
| Fig. 28 | Dinorthis pectinella (Emmons) Hall & Clarke | ||
| Fig. 29 | Tentaculites niagarensis var cumberlandiae Hall | ||
| Figs. 30-31 | Sphaerocystites multifasciatus Hall | ||
| Fig. 32 | Palaeaspis americana Claypole (Restored) | ||
| Reference: | Clark, W.B., et al., 1906, Volume VI, Maryland Geological Survey, Baltimore, MD |
