# Jupiter Formation

The Jupiter Formation is a geologic formation in Quebec, well-exposed in the southern third of Anticosti Island and lying in the St Lawrence River Valley. It preserves fossils dating back to the Silurian period.

## Fossil content

| Color key Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon | Notes Uncertain or tentative taxa are in small text; crossed out taxa are discredited. |

### Trace Fossils

Trace fossils :
| Genus | Species | Presence | Material | Notes | Images |
| Klemmatoica | K. linguliforma | Goéland Member. | Associated with the brachiopod Rowellella and the shell of a Phanerotrema. | | |
| Trypanites | | Goéland Member. | Borings in gastropod shells. | | |

### Vertebrates

Conodonts :
| Genus | Species | Presence | Material | Notes | Images |
| Icriodella | I. deflecta | Lower two members. | | Material originally thought to be from the Gun River Formation. | |

### Invertebrates

Brachiopods :
| Genus | Species | Presence | Material | Notes |
| Clorinda | C. (Phricoclorinda) chaloupensis | Cybèle Member. | A749 (112, mostly well-preserved); A850 (178); A937 (about 100,some embedded in small blocks); A939 (44); A1040 (105); A1047 (1); A1064b (76); A1125 (68). | |
| Clorinda | C. tumidula | Goéland, Richardson, Ferrum and Pavillon Members. | | |
| Clorinda | C. superundata | Goéland Member | | |
| Costistricklandia | C. brevis | Pavillon Member. | "A279b (1 broken ventral valve, 1 small slab with interiors exposed) and A333 (>10 fragmentary, disarticulated valves)". | |
| Costistricklandia | C. gaspeensis | Pavillon Member (top). | A 107-108 (1); A 279b (5 broken valves on small slab); A281 (3); A418-5 (10 valves on slabs); A554 (2). | |
| Dihelictera | D. acrolopha | East Point Member. | Several hundred specimens. | |
| Ehlersella | E. davidsonii | Cybèle and Ferrum members. | | |
| Ehlersella | E. transulcata | Basal Ferrum Member. | A 185 (a crushed shell) and A 1066b (32, variously damaged). | |
| Joviatrypa | J. brabyla | Lower Goéland Member. | Several thousand specimens. | |
| Microcardinalia | M. (Chiastodoca) salterii | Ferrum Member | | |
| Microcardinalia | M. (Chiastodoca) richardsoni | Goéland and Richardson members. | | |
| Microcardinalia | M. (Chiastodoca) fabatina | Upper Ferrum Member. | A101 (270 specimens). | |
| Microcardinalia | M. (Dauphinella) divaricata | Cybèle and Ferrum members. | | |
| Microcardinalia | M. (Dauphinella) melissa | Uppermost Ferrum Member and Pavillon Member. | | |
| Microcardinalia | M. (Dauphinella) sp. | Ferrum and Pavillon Members. | A255 (16 free shells, 6 slabs with shells in life position) and A108 (1 specimen). | |
| Parastrophinella | P. ops | Upper Richardson Member. | A1158 (3 shells). | |
| Parastrophinella | P. sp. | East Point Member and Ferrum Member. | A863 (1 shell) and A959 (1 shell). | |
| Pentameroides | P. subrectus | Pavillon Member. | "A333 (about 1 conjoined shell; 40 incomplete specimens), A 1395 (6 conjoined shells, 12 ventral valves)". | |
| Pentamerus | P. oblongus | Richardson, Cybèle, Ferrum and Pavillon Members. | | |
| Pentamerus | P. palaformis | Goéland Member. | | Also found in the Gun River Formation. |
| Rowellella | R.? anticostiensis | Goéland Member. | Specimen associated with the shell of a Phanerotrema and the trace fossil Klemmatoica linguliforma. | A lingulid. |
| Stricklandia | S. gwelani | Goéland Member. | | Also found in the Gun River Formation. |
| Stricklandia | S. planirostrata | Ferrum Member. | | |
Corals :
| Genus | Species | Presence | Material | Notes | Images |
| Acidolites | A. sp. | | | An unnamed species of the genus. | |
Cornulitids :
| Genus | Species | Presence | Material | Notes | Images |
| Conchicolites | | Goéland Member. | Two individuals encrusting the surface of a Clathrodictyon, which itself is associated with a Phanerotrema shell. | | |
Echinoderms :
| Genus | Species | Presence | Material | Notes | Images |
| Perforocycloides | P. nathalieae | Cybèle Member. | MPEP335.7. | A cyclocystoid. | |
| Rhenopyrgus | R. viviani | Cybèle Member to Pavillon Member. | | An edrioasteroid. | |
Gastropods :
| Genus | Species | Presence | Material | Notes | Images |
| Phanerotrema | P. sp. | Goéland Member. | Shells, some with Trypanites borings or other associated organisms. | A phanerotrematid. | |
Sponges :
| Genus | Species | Presence | Material | Notes | Images |
| Clathrodictyon | | Goéland Member. | Specimen found growing on a Phanerotrema shell. | A stromatoporoid. | |
Trilobites :
| Genus | Species | Presence | Material | Notes | Images |
| Encrinurus | E. deomenos | | | | |