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Jupiter Formation
Stratigraphic range: Early Silurian (Aeronian-Telychian) 440.8–433.4 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Type	Geological formation
Sub-units	From the base upwards: Goéland Member East Point Member Richardson Member Cybèle Member Ferrum Member Pavillon Member
Overlies	Gun River Formation
Thickness	167 meters
Location
Region	Quebec
Country	Canada
Type section
Named for	Jupiter River
Named by	Schuchert and Twenhofel
Year defined	1910

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

Trace Fossils

Vertebrates

Invertebrates

Brachiopods
Genus	Species	Presence	Material	Notes	Images
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).
	C. tumidula	Goéland, Richardson, Ferrum and Pavillon Members.
	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)".
	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.
	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
	M. (Chiastodoca) richardsoni	Goéland and Richardson members.
	M. (Chiastodoca) fabatina	Upper Ferrum Member.	A101 (270 specimens).
	M. (Dauphinella) divaricata	Cybèle and Ferrum members.
	M. (Dauphinella) melissa	Uppermost Ferrum Member and Pavillon Member.
	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).
	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.
	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.
	S. planirostrata	Ferrum Member.

See also

• List of fossiliferous stratigraphic units in Quebec

References

1. ^ Copper, P.; Long, D.G.F. (31 October 1990). "Stratigraphic revision of the Jupiter Formation, Anticosti Island, Canada: a major reference section above the Ordovician-Silurian boundary". Newsletters on Stratigraphy. 23 (1): 11–36. doi:10.1127/nos/23/1990/11. ISSN 0078-0421.
2. ^ Ove, Tapanila, Leif Ebbestad, Jan (2008). Benthic island community on the back of a snail: Silurian, Anticosti Island, Canada. Uppsala universitet, Evolutionsmuseet. OCLC 1235121208.{{cite book}}: CS1 maint: multiple names: authors list (link)
3. ^ Ebbestad, Jan Ove R.; Tapanila, Leif (9 June 2005). "Non-predatory borings in Phanerotrema (Gastropoda), Early Silurian, Anticosti Island, Québec, Canada". Palaeogeography, Palaeoclimatology, Palaeoecology. 221 (3): 325–341. doi:10.1016/j.palaeo.2005.03.003. ISSN 0031-0182.
4. ^ Copper, Paul; Long, Darrel G. F.; Jin, Jisuo (2012). "The Early Silurian Gun River Formation of Anticosti Island, eastern Canada: A key section for the mid-Llandovery of North America". Newsletters on Stratigraphy. 45 (3): 263. doi:10.1127/0078-0421/2012/0024. ISSN 0078-0421.
5. ^ Jin, Jisuo; Copper, Paul. "Late Ordovician and Early Silurian pentamerid brachiopods of Anticosti Island, Québec, Canada". Palaeontographica Canadiana.
6. ^ Copper, Paul (September 1995). "Five new genera of Late Ordovician-Early Silurian brachiopods from Anticosti Island, eastern Canada". Journal of Paleontology. 69 (5): 846–862. doi:10.1017/s0022336000035526. ISSN 0022-3360. S2CID 132079646.
7. Dixon, O. A. (January 1986). "The heliolitid coral Acidolites in Ordovician–Silurian rocks of eastern Canada1". Journal of Paleontology. 60 (1): 26–52. doi:10.1017/S002233600002148X. ISSN 0022-3360. S2CID 130759173.
8. ^ Ewin, Timothy A. M.; Reich, Mike; Graham, Mark R.; Cournoyer, Mario E. (1 December 2019). "Perforocycloides nathalieae new genus and species, an unusual Silurian cyclocystoid (Echinodermata) from Anticosti Island, Québec, Canada". PalZ. 93 (4): 625–635. doi:10.1007/s12542-019-00483-w. hdl:10141/622663. ISSN 1867-6812.
9. Ewin, T. A. M.; Martin, M.; Isotalo, P.; Zamora, S. (2020). "New rhenopyrgid edrioasteroids (Echinodermata) and their implications for taxonomy, functional morphology, and paleoecology". Journal of Paleontology. 94. Universidad de Zaragoza: 115–130. doi:10.1017/jpa.2019.65. ISSN 0022-3360. S2CID 204263950.
10. "The Silurian trilobite Encrinurus punctatus (Wahlenberg) and allied species | The Palaeontological Association". www.palass.org. Retrieved 19 September 2022.

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 8 July 2014.

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