Jupiter Formation
Jupiter Formation | |
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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:
|
Overlies | Gun River Formation[1] |
Thickness | 167 meters[1] |
Location | |
Region | ![]() |
Country | ![]() |
Type section | |
Named for | Jupiter River |
Named by | Schuchert and Twenhofel[1] |
Year defined | 1910[1] |
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.[1] It preserves fossils dating back to the Silurian period.
Fossil content
Color key
| Notes Uncertain or tentative taxa are in small text; |
Trace Fossils
Trace fossils | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Klemmatoica | K. linguliforma | Goéland Member.[2] | Associated with the brachiopod Rowellella and the shell of a Phanerotrema.[2] | ||
Trypanites | Goéland Member.[3] | Borings in gastropod shells.[3] |
Vertebrates
Conodonts | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Icriodella | I. deflecta | Lower two members.[4] | Material originally thought to be from the Gun River Formation.[4] |
Invertebrates
Brachiopods | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Clorinda | C. (Phricoclorinda) chaloupensis | Cybèle Member.[5] | 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).[5] | ||
C. tumidula | Goéland, Richardson, Ferrum and Pavillon Members.[5] | ||||
C. superundata | Goéland Member[5] | ||||
Costistricklandia | C. brevis | Pavillon Member.[5] | "A279b (1 broken ventral valve, 1 small slab with interiors exposed) and A333 (>10 fragmentary, disarticulated valves)".[5] | ||
C. gaspeensis | Pavillon Member (top).[5] | A 107-108 (1); A 279b (5 broken valves on small slab); A281 (3); A418-5 (10 valves on slabs); A554 (2).[5] | |||
Dihelictera | D. acrolopha | East Point Member.[6] | Several hundred specimens.[6] | ||
Ehlersella | E. davidsonii | Cybèle and Ferrum members.[5] | |||
E. transulcata | Basal Ferrum Member.[5] | A 185 (a crushed shell) and A 1066b (32, variously damaged).[5] | |||
Joviatrypa | J. brabyla | Lower Goéland Member.[6] | Several thousand specimens.[6] | ||
Microcardinalia | M. (Chiastodoca) salterii | Ferrum Member[5] | |||
M. (Chiastodoca) richardsoni | Goéland and Richardson members.[5] | ||||
M. (Chiastodoca) fabatina | Upper Ferrum Member.[5] | A101 (270 specimens).[5] | |||
M. (Dauphinella) divaricata | Cybèle and Ferrum members.[5] | ||||
M. (Dauphinella) melissa | Uppermost Ferrum Member and Pavillon Member.[5] | ||||
M. (Dauphinella) sp. | Ferrum and Pavillon Members.[5] | A255 (16 free shells, 6 slabs with shells in life position) and A108 (1 specimen).[5] | |||
Parastrophinella | P. ops | Upper Richardson Member.[5] | A1158 (3 shells).[5] | ||
P. sp. | East Point Member and Ferrum Member.[5] | A863 (1 shell) and A959 (1 shell).[5] | |||
Pentameroides | P. subrectus | Pavillon Member.[5] | "A333 (about 1 conjoined shell; 40 incomplete specimens), A 1395 (6 conjoined shells, 12 ventral valves)".[5] | ||
Pentamerus | P. oblongus | Richardson, Cybèle, Ferrum and Pavillon Members.[5] | |||
P. palaformis | Goéland Member.[5] | Also found in the Gun River Formation. | |||
Rowellella | R.? anticostiensis | Goéland Member.[2] | Specimen associated with the shell of a Phanerotrema and the trace fossil Klemmatoica linguliforma.[2] | A lingulid. | |
Stricklandia | S. gwelani | Goéland Member.[5] | Also found in the Gun River Formation. | ||
S. planirostrata | Ferrum Member.[5] |
Corals | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Acidolites | A. sp. | An unnamed species of the genus.[7] |
Cornulitids | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Conchicolites | Goéland Member.[2] | Two individuals encrusting the surface of a Clathrodictyon, which itself is associated with a Phanerotrema shell.[2] |
Echinoderms | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Perforocycloides | P. nathalieae | Cybèle Member.[8] | MPEP335.7.[8] | A cyclocystoid. | |
Rhenopyrgus | R. viviani | Cybèle Member to Pavillon Member.[9] | An edrioasteroid. |
Gastropods | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Phanerotrema | P. sp. | Goéland Member.[3][2] | Shells, some with Trypanites borings or other associated organisms.[3][2] | A phanerotrematid. |
Sponges | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Clathrodictyon | Goéland Member.[2] | Specimen found growing on a Phanerotrema shell.[2] | A stromatoporoid. |
Trilobites | |||||
---|---|---|---|---|---|
Genus | Species | Presence | Material | Notes | Images |
Encrinurus | E. deomenos | [10] |
See also
References
- ^ a b c d e 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.
- ^ a b c d e f g h i j 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) - ^ a b c d 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.
- ^ a b 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.
- ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac Jin, Jisuo; Copper, Paul. "Late Ordovician and Early Silurian pentamerid brachiopods of Anticosti Island, Québec, Canada". Palaeontographica Canadiana.
- ^ a b c d 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.
- ^ 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.
- ^ a b 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.
- ^ 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.
- ^ "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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