York River Formation
Geologic formation in Quebec, Canada
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The York River Formation is a geologic formation in Quebec. It preserves fossils dating back to the Devonian period.
| York River Formation | |
|---|---|
| Stratigraphic range: Devonian | |
| Type | Geological formation |
| Unit of | Gaspé Sandstones |
| Underlies | Battery Point Formation |
| Location | |
| Region | Quebec |
| Country |  Canada |
Description
The basal unit of the Gaspé Sandstones, the York River Formation is wholly marine and the Battery Point Formation rests unconformably above it.
Fossil content
Vertebrates
| Acanthodians | |||||
|---|---|---|---|---|---|
| Genus | Species | Presence | Material | Notes | Images |
| Ankylacanthus | A. incurvus | Anse-à-Brillant, Route 197.[1] | Fin spines.[1] | A possible gyracanthid, formerly known as Gyracanthus incurvus.[1] | |
| A. convexus | Mont Lyall and southwest of Mont Tuzo, Gaspé Peninsula.[1] | Fin spines.[1] | A possible gyracanthid, formerly known as Gyracanthus convexus.[1] | ||
| Chondrichthyans | |||||
|---|---|---|---|---|---|
| Genus | Species | Presence | Material | Notes | Images |
| Doliodus | D. latispinosus | Upper part of the formation.[2] | Fin spines.[2] | Also known from the Campbellton and Battery Point formations.[2] | |
Invertebrates
| Cnidarians | |||||
|---|---|---|---|---|---|
| Genus | Species | Presence | Material | Notes | Images |
| Procteria | P. (Pachyprocteria) vermifera | Upper part of the formation.[4] | A tabulate coral. | ||
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