Lithographic Plates from Kentucky Fossil Shells
Plate XXXVI: Ordovician poriferan
| Figure Number | Modern genus and species | 1889 Genus and species | Phyllum or Class | Age, etc. |
|---|---|---|---|---|
| 1, 2 | same as 1889 | Brachiospongia digitata (Owen 1857) | poriferan | Ordovician |
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